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Related Services

Relationships with Other Services

Table 1 Relationships with other services
Service Relationships
Virtual Private Cloud (VPC) MRS clusters are created in the subnets of a VPC. VPCs provide a secure, isolated, and logical network environment for your MRS clusters.
Object Storage Service (OBS)

OBS stores the following user data:

  • MRS job input data, such as user programs and data files
  • MRS job output data, such as result files and log files of jobs

In MRS clusters, HDFS, Hive, MapReduce, YARN, Spark, Flume, and Loader can import or export data from OBS.

MRS uses the parallel file system of OBS to provide services.
Elastic Cloud Server (ECS) MRS uses elastic cloud servers (ECSs) as cluster nodes.
Relational Database Service (RDS) RDS stores MRS system running data, including MRS cluster metadata.
Identity and Access Management (IAM) IAM provides authentication for MRS.
Simple Message Notification (SMN) MRS uses SMN to provide one-to-multiple message subscription and notification over a variety of protocols.
Cloud Trace Service (CTS) CTS provides you with operation records of MRS resource operation requests and request results for querying, auditing, and backtracking.
Table 2 MRS operations recorded by CTS
Operation Resource Type Trace Name
Creating a cluster cluster_mrs createCluster
Deleting a cluster cluster_mrs deleteCluster
Expanding a cluster cluster_mrs scaleOutCluster
Shrinking a cluster cluster_mrs scaleInCluster

After you enable CTS, the system starts recording operations on cloud resources. You can view operation records of the last 7 days on the CTS management console. For details, see Cloud Trace Service > Getting Started > Querying Real-Time Traces.