:original_name: mrs_01_0292.html

.. _mrs_01_0292:

Loader Health Check Indicators
==============================

ZooKeeper Health Status
-----------------------

**Indicator**: ZooKeeper health status

**Description**: This indicator is used to check whether the ZooKeeper health status is normal. If the status is abnormal, the ZooKeeper service is unhealthy.

**Recovery Guide**: If this indicator is abnormal, you can rectify the fault by referring to the alarm handling guide.

HDFS Health Status
------------------

**Indicator**: HDFS health status

**Description**: This indicator is used to check whether the HDFS health status is normal. If the status is abnormal, the service is unhealthy.

**Recovery Guide**: If this indicator is abnormal, you can rectify the fault by referring to the alarm handling guide.

DBService Health Status
-----------------------

**Indicator**: DBService Health Status

**Description**: This indicator is used to check whether the DBService health status is normal. If the status is abnormal, the DBService service is unhealthy.

**Recovery Guide**: If this indicator is abnormal, you can rectify the fault by referring to the alarm handling guide.

Yarn Health Status
------------------

**Indicator**: Yarn health status

**Description**: This indicator is used to check whether the Yarn health status is normal. If the status is abnormal, the service is unhealthy.

**Recovery Guide**: If this indicator is abnormal, you can rectify the fault by referring to the alarm handling guide.

MapReduce Health Status
-----------------------

**Indicator**: MapReduce Health Status

**Description**: This indicator is used to check whether the MapReduce health status is normal. If the status is abnormal, the MapReduce service is unhealthy.

**Recovery Guide**: If this indicator is abnormal, you can rectify the fault by referring to the alarm handling guide.

Loader Process Status
---------------------

**Indicator**: Loader Process Status

**Description**: This indicator is used to check whether the Loader process is normal. If the status is abnormal, the service is unhealthy.

**Recovery Guide**: If this indicator is abnormal, you can rectify the fault by referring to the alarm handling guide.

Service Health Status
---------------------

**Indicator**: Service Status

**Description**: This indicator is used to check whether the Loader service status is normal. If the status is abnormal, the service is unhealthy.

**Recovery Guide**: If this indicator is abnormal, you can rectify the fault by referring to the alarm handling guide.

Alarm Check
-----------

**Indicator**: Alarm Information

**Description**: This indicator is used to check whether alarms exist for loader. If alarms exist, the service is unhealthy.

**Recovery Guide**: If this indicator is abnormal, you can rectify the fault by referring to the alarm handling guide.
