:original_name: mrs_01_9003.html

.. _mrs_01_9003:

Change History
==============

+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| Release Date                      | What's New                                                                                                                                           |
+===================================+======================================================================================================================================================+
| 2023-07-27                        | Modified the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   | Modified the ALM-45431 alarm title. For details, see :ref:`ALM-45431 Improper ClickHouse Instance Distribution for Topology Allocation <alm-45431>`. |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2023-05-04                        | Modified the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   | -  Added MRS 3.2.0-LTS.1. For details, see :ref:`Creating a Custom Cluster <mrs_01_0513>`.                                                           |
|                                   | -  Added description of CDL and IoTDB technical principles, For details, see :ref:`CDL <mrs_08_0097>` and :ref:`IoTDB <mrs_08_0093>`.                |
|                                   | -  Added instructions for backing up and restoring CDL and IoT database data.                                                                        |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Backing Up CDL Data <admin_guide_000343>`                                                                                                |
|                                   |    -  :ref:`Backing Up IoTDB Metadata <admin_guide_000350>`                                                                                          |
|                                   |    -  :ref:`Backing Up IoTDB Service Data <admin_guide_000360>`                                                                                      |
|                                   |    -  :ref:`Restoring CDL Data <admin_guide_000345>`                                                                                                 |
|                                   |    -  :ref:`Restoring IoTDB Metadata <admin_guide_000351>`                                                                                           |
|                                   |    -  :ref:`Restoring IoTDB Service Data <admin_guide_000361>`                                                                                       |
|                                   |                                                                                                                                                      |
|                                   | -  Supported online patch pushing and update. For details, see :ref:`Patch Update <mrs_01_248926>`.                                                  |
|                                   | -  Added and updated some alarms of MRS 3.2.0-LTS.1.                                                                                                 |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`ALM-12012 NTP Service Is Abnormal <alm-12012>`                                                                                           |
|                                   |    -  :ref:`ALM-12037 NTP Server Abnormal <alm-12037>`                                                                                               |
|                                   |    -  :ref:`ALM-12103 Executor Resource Exception <alm-12103>`                                                                                       |
|                                   |    -  :ref:`ALM-12104 Abnormal Knox Resources <alm-12104>`                                                                                           |
|                                   |    -  :ref:`ALM-12172 Failed to Report Metrics to Cloud Eye <alm-12172>`                                                                             |
|                                   |    -  :ref:`ALM-12190 Number of Knox Connections Exceeds the Threshold <alm-12190>`                                                                  |
|                                   |    -  :ref:`ALM-19021 Handler Usage of RegionServer Exceeds the Threshold <alm-19021>`                                                               |
|                                   |    -  :ref:`ALM-23001 Loader Service Unavailable <alm-23001>`                                                                                        |
|                                   |    -  :ref:`ALM-23003 Loader Task Execution Failure <alm-23003>`                                                                                     |
|                                   |    -  :ref:`ALM-23004 Loader Heap Memory Usage Exceeds the Threshold <alm-23004>`                                                                    |
|                                   |    -  :ref:`ALM-23005 Loader Non-Heap Memory Usage Exceeds the Threshold <alm-23005>`                                                                |
|                                   |    -  :ref:`ALM-23006 Loader Direct Memory Usage Exceeds the Threshold <alm-23006>`                                                                  |
|                                   |    -  :ref:`ALM-23007 Garbage Collection (GC) Time of the Loader Process Exceeds the Threshold <alm-23007>`                                          |
|                                   |    -  :ref:`ALM-38011 User Connection Usage on Broker Exceeds the Threshold <alm-38011>`                                                             |
|                                   |    -  :ref:`ALM-45000 HetuEngine Service Unavailable <alm-45000>`                                                                                    |
|                                   |    -  :ref:`ALM-45001 Faulty HetuEngine Compute Instances <alm-45001>`                                                                               |
|                                   |    -  :ref:`ALM-45429 Table Metadata Synchronization Failed on the Added ClickHouse Node <alm-45429>`                                                |
|                                   |    -  :ref:`ALM-45430 Permission Metadata Synchronization Failed on the Added ClickHouse Node <alm-45430>`                                           |
|                                   |    -  :ref:`ALM-45431 Improper ClickHouse Instance Distribution for Topology Allocation <alm-45431>`                                                 |
|                                   |    -  :ref:`ALM-45432 ClickHouse User Synchronization Process Fails <alm-45432>`                                                                     |
|                                   |    -  :ref:`ALM-45433 ClickHouse AZ Topology Exception <alm-45433>`                                                                                  |
|                                   |    -  :ref:`ALM-45434 A Single Replica Exists in the ClickHouse Data Table <alm-45434>`                                                              |
|                                   |    -  :ref:`ALM-45585 IoTDB Service Unavailable <alm-45585>`                                                                                         |
|                                   |    -  :ref:`ALM-45586 IoTDBServer Heap Memory Usage Exceeds the Threshold <alm-45586>`                                                               |
|                                   |    -  :ref:`ALM-45587 IoTDBServer GC Duration Exceeds the Threshold <alm-45587>`                                                                     |
|                                   |    -  :ref:`ALM-45588 IoTDBServer Direct Memory Usage Exceeds the Threshold <alm-45588>`                                                             |
|                                   |    -  :ref:`ALM-45589 ConfigNode Heap Memory Usage Exceeds the Threshold <alm-45589>`                                                                |
|                                   |    -  :ref:`ALM-45590 ConfigNode GC Duration Exceeds the Threshold <alm-45590>`                                                                      |
|                                   |    -  :ref:`ALM-45591 ConfigNode Direct Memory Usage Exceeds the Threshold <alm-45591>`                                                              |
|                                   |    -  :ref:`ALM-45592 IoTDBServer RPC Execution Duration Exceeds the Threshold <alm-45592>`                                                          |
|                                   |    -  :ref:`ALM-45593 IoTDBServer Flush Execution Duration Exceeds the Threshold <alm-45593>`                                                        |
|                                   |    -  :ref:`ALM-45594 IoTDBServer Intra-Space Merge Duration Exceeds the Threshold <alm-45594>`                                                      |
|                                   |    -  :ref:`ALM-45595 IoTDBServer Cross-Space Merge Duration Exceeds the Threshold <alm-45595>`                                                      |
|                                   |    -  :ref:`ALM-45615 CDL Service Unavailable <alm-45615>`                                                                                           |
|                                   |    -  :ref:`ALM-45616 CDL Job Execution Exception <alm-45616>`                                                                                       |
|                                   |    -  :ref:`ALM-45617 Data Queued in the CDL Replication Slot Exceeds the Threshold <alm-45617>`                                                     |
|                                   |    -  :ref:`ALM-45635 FlinkServer Job Execution Failure <alm-45635>`                                                                                 |
|                                   |    -  :ref:`ALM-45636 FlinkServer Job Checkpoints Keep Failing <alm-45636>`                                                                          |
|                                   |    -  :ref:`ALM-45636 Flink Job Checkpoints Keep Failing <alm-45636-1>`                                                                              |
|                                   |    -  :ref:`ALM-45637 FlinkServer Task Is Continuously Under Back Pressure <alm-45637>`                                                              |
|                                   |    -  :ref:`ALM-45638 Number of Restarts After FlinkServer Job Failures Exceeds the Threshold <alm-45638>`                                           |
|                                   |    -  :ref:`ALM-45638 Number of Restarts After Flink Job Failures Exceeds the Threshold <alm-45638-1>`                                               |
|                                   |    -  :ref:`ALM-45640 FlinkServer Heartbeat Interruption Between the Active and Standby Nodes <alm-45640>`                                           |
|                                   |    -  :ref:`ALM-45641 Data Synchronization Exception Between the Active and Standby FlinkServer Nodes <alm-45641>`                                   |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2022-11-01                        | Modified the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   | -  Added some FAQ. For details, see :ref:`FAQ <en-us_topic_0000001349287889>`.                                                                       |
|                                   | -  Updated the screenshots in some sections in :ref:`FusionInsight Manager Operation Guide (Applicable to 3.x) <mrs_01_0606>`.                       |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2022-9-29                         | Modified the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   | Added MRS 3.1.2-LTS.3. For details, see :ref:`Creating a Custom Cluster <mrs_01_0513>`.                                                              |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2021-06-30                        | Modified the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   | Added MRS 3.1.0-LTS.1. For details, see :ref:`Creating a Custom Cluster <mrs_01_0513>`.                                                              |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2020-03-12                        | Accepted for RM-1305 and RM-2779.                                                                                                                    |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2020-03-09                        | Modified the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   | Added MRS 1.9.2. For details, see :ref:`Creating a Custom Cluster <mrs_01_0513>`.                                                                    |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2020-02-22                        | Modified the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   | -  Added MRS 2.1.0. For details, see :ref:`Creating a Custom Cluster <mrs_01_0513>`.                                                                 |
|                                   | -  Supported scale-out of nodes with new specifications. For details, see :ref:`Manually Scaling Out a Cluster <mrs_01_0041>`.                       |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2019-07-03                        | Modified the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   | :ref:`Creating a Custom Cluster <mrs_01_0513>`                                                                                                       |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2018-10-09                        | Accepted in OTC 3.2.                                                                                                                                 |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2018-09-10                        | Modified the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   | :ref:`Sample Scripts <mrs_01_0418>`                                                                                                                  |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2018-08-30                        | -  Added the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Installing Third-Party Software Using Bootstrap Actions <mrs_01_0413>`                                                                   |
|                                   |    -  :ref:`Introduction to Bootstrap Actions <mrs_01_0414>`                                                                                         |
|                                   |    -  :ref:`Preparing the Bootstrap Action Script <mrs_01_0417>`                                                                                     |
|                                   |    -  :ref:`View Execution Records <mrs_01_0415>`                                                                                                    |
|                                   |    -  :ref:`Adding a Bootstrap Action <mrs_01_0416>`                                                                                                 |
|                                   |    -  :ref:`Sample Scripts <mrs_01_0418>`                                                                                                            |
|                                   |                                                                                                                                                      |
|                                   | -  Modified the following content:                                                                                                                   |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Creating a Custom Cluster <mrs_01_0513>`                                                                                                 |
|                                   |    -  :ref:`Creating a Cluster <mrs_01_0027>`                                                                                                        |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2018-05-29                        | -  Modified the following content:                                                                                                                   |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Creating a Cluster <mrs_01_0027>`                                                                                                        |
|                                   |    -  :ref:`Creating a Custom Cluster <mrs_01_0513>`                                                                                                 |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2018-03-16                        | -  Added the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Manually Scaling In a Cluster <mrs_01_0060>`                                                                                             |
|                                   |    -  :ref:`Configuring an Auto Scaling Rule <mrs_01_0061>`                                                                                          |
|                                   |    -  :ref:`Configuring Message Notification <mrs_01_0062>`                                                                                          |
|                                   |    -  :ref:`ALM-12014 Device Partition Lost <alm_12014>`                                                                                             |
|                                   |    -  :ref:`ALM-12015 Device Partition File System Read-Only <alm_12015>`                                                                            |
|                                   |    -  :ref:`ALM-12043 DNS Parsing Duration Exceeds the Threshold <alm_12043>`                                                                        |
|                                   |    -  :ref:`ALM-12045 Read Packet Dropped Rate Exceeds the Threshold <alm_12045>`                                                                    |
|                                   |    -  :ref:`ALM-12046 Write Packet Dropped Rate Exceeds the Threshold <alm_12046>`                                                                   |
|                                   |    -  :ref:`ALM-12047 Read Packet Error Rate Exceeds the Threshold <alm_12047>`                                                                      |
|                                   |    -  :ref:`ALM-12048 Write Packet Error Rate Exceeds the Threshold <alm_12048>`                                                                     |
|                                   |    -  :ref:`ALM-12049 Read Throughput Rate Exceeds the Threshold <alm_12049>`                                                                        |
|                                   |    -  :ref:`ALM-12050 Write Throughput Rate Exceeds the Threshold <alm_12050>`                                                                       |
|                                   |    -  :ref:`ALM-12051 Disk Inode Usage Exceeds the Threshold <alm_12051>`                                                                            |
|                                   |    -  :ref:`ALM-12052 Usage of Temporary TCP Ports Exceeds the Threshold <alm_12052>`                                                                |
|                                   |    -  :ref:`ALM-12053 File Handle Usage Exceeds the Threshold <alm_12053>`                                                                           |
|                                   |    -  :ref:`ALM-12054 The Certificate File Is Invalid <alm_12054>`                                                                                   |
|                                   |    -  :ref:`ALM-12055 The Certificate File Is About to Expire <alm_12055>`                                                                           |
|                                   |    -  :ref:`ALM-18008 Heap Memory Usage of Yarn ResourceManager Exceeds the Threshold <alm_18008>`                                                   |
|                                   |    -  :ref:`ALM-18009 Heap Memory Usage of MapReduce JobHistoryServer Exceeds the Threshold <alm_18009>`                                             |
|                                   |    -  :ref:`ALM-20002 Hue Service Unavailable <alm_20002>`                                                                                           |
|                                   |    -  :ref:`ALM-43001 Spark Service Unavailable <alm_43001>`                                                                                         |
|                                   |    -  :ref:`ALM-43006 Heap Memory Usage of the JobHistory Process Exceeds the Threshold <alm_43006>`                                                 |
|                                   |    -  :ref:`ALM-43007 Non-Heap Memory Usage of the JobHistory Process Exceeds the Threshold <alm_43007>`                                             |
|                                   |    -  :ref:`ALM-43008 Direct Memory Usage of the JobHistory Process Exceeds the Threshold <alm_43008>`                                               |
|                                   |    -  :ref:`ALM-43009 JobHistory GC Time Exceeds the Threshold <alm_43009>`                                                                          |
|                                   |    -  :ref:`ALM-43010 Heap Memory Usage of the JDBCServer Process Exceeds the Threshold <alm_43010>`                                                 |
|                                   |    -  :ref:`ALM-43011 Non-Heap Memory Usage of the JDBCServer Process Exceeds the Threshold <alm_43011>`                                             |
|                                   |    -  :ref:`ALM-43012 Direct Memory Usage of the JDBCServer Process Exceeds the Threshold <alm_43012>`                                               |
|                                   |    -  :ref:`ALM-43013 JDBCServer GC Time Exceeds the Threshold <alm_43013>`                                                                          |
|                                   |                                                                                                                                                      |
|                                   | -  Modified the following content:                                                                                                                   |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Creating a Cluster <mrs_01_0027>`                                                                                                        |
|                                   |    -  :ref:`Uploading Data and Programs <mrs_01_0028>`                                                                                               |
|                                   |    -  :ref:`Creating a Job <mrs_01_0029>`                                                                                                            |
|                                   |    -  :ref:`Cluster List <en-us_topic_0012799688>`                                                                                                   |
|                                   |    -  :ref:`Checking the Cluster Status <en-us_topic_0012808230>`                                                                                    |
|                                   |    -  :ref:`Creating a Custom Cluster <mrs_01_0513>`                                                                                                 |
|                                   |    -  :ref:`Viewing Basic Cluster Information <en-us_topic_0012808231>`                                                                              |
|                                   |    -  :ref:`Manually Scaling Out a Cluster <mrs_01_0041>`                                                                                            |
|                                   |    -  :ref:`Importing and Exporting Data <en-us_topic_0019489057>`                                                                                   |
|                                   |    -  :ref:`Viewing Information of a Historical Cluster <en-us_topic_0057514383>`                                                                    |
|                                   |    -  :ref:`Accessing MRS Manager MRS 2.1.0 or Earlier) <mrs_01_0102>`                                                                               |
|                                   |    -  :ref:`Changing the Password of an Operation User <mrs_01_0427>`                                                                                |
|                                   |    -  :ref:`Initializing the Password of a System User <mrs_01_0428>`                                                                                |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2018-01-31                        | Modified the following contents:                                                                                                                     |
|                                   |                                                                                                                                                      |
|                                   | -  :ref:`Accessing MRS Manager MRS 2.1.0 or Earlier) <mrs_01_0102>`                                                                                  |
|                                   | -  :ref:`Creating a Custom Cluster <mrs_01_0513>`                                                                                                    |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2017-11-08                        | -  Added the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Web UIs of Open Source Components <mrs_01_0362>`                                                                                         |
|                                   |                                                                                                                                                      |
|                                   | -  Modified the following contents:                                                                                                                  |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Creating a Cluster <mrs_01_0027>`                                                                                                        |
|                                   |    -  :ref:`Creating a Custom Cluster <mrs_01_0513>`                                                                                                 |
|                                   |    -  :ref:`Viewing Basic Cluster Information <en-us_topic_0012808231>`                                                                              |
|                                   |    -  :ref:`Manually Scaling Out a Cluster <mrs_01_0041>`                                                                                            |
|                                   |    -  :ref:`Viewing the Alarm List <en-us_topic_0040980162>`                                                                                         |
|                                   |    -  :ref:`Viewing Information of a Historical Cluster <en-us_topic_0057514383>`                                                                    |
|                                   |    -  :ref:`Viewing Job Configuration and Logs <mrs_01_0055>`                                                                                        |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2017-06-09                        | -  Added the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Viewing Information of a Historical Cluster <en-us_topic_0057514383>`                                                                    |
|                                   |    -  :ref:`Configuring Cross-Cluster Mutual Trust Relationships <mrs_01_0354>`                                                                      |
|                                   |    -  :ref:`Configuring Users to Access Resources of a Trusted Cluster <mrs_01_0355>`                                                                |
|                                   |                                                                                                                                                      |
|                                   | -  Modified the following contents:                                                                                                                  |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Uploading Data and Programs <mrs_01_0028>`                                                                                               |
|                                   |    -  :ref:`Creating a Job <mrs_01_0029>`                                                                                                            |
|                                   |    -  :ref:`Creating a Custom Cluster <mrs_01_0513>`                                                                                                 |
|                                   |    -  :ref:`Installing a Client (Version 3.x or Later) <mrs_01_0090>`                                                                                |
|                                   |    -  :ref:`Installing a Client (Versions Earlier Than 3.x) <mrs_01_0091>`                                                                           |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2017-04-06                        | -  Added the following content:                                                                                                                      |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Accessing MRS Manager MRS 2.1.0 or Earlier) <mrs_01_0102>`                                                                               |
|                                   |    -  :ref:`MRS Multi-User Permission Management <mrs_01_0340>`                                                                                      |
|                                   |                                                                                                                                                      |
|                                   | -  Modified the following contents:                                                                                                                  |
|                                   |                                                                                                                                                      |
|                                   |    -  :ref:`Creating a Custom Cluster <mrs_01_0513>`                                                                                                 |
|                                   |    -  :ref:`Manually Scaling Out a Cluster <mrs_01_0041>`                                                                                            |
|                                   |    -  :ref:`Viewing Basic Cluster Information <en-us_topic_0012808231>`                                                                              |
|                                   |    -  :ref:`Viewing and Manually Clearing an Alarm <mrs_01_0113>`                                                                                    |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2017-02-20                        | This issue is the first official release.                                                                                                            |
+-----------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------+