ALM-19018 HBase Compaction Queue Size Exceeds the Threshold

Description

The system checks the HBase compaction queue size every 300 seconds. This alarm is generated when the compaction queue size exceeds the alarm threshold (100 by default). This alarm is cleared when the compaction queue size is less than the threshold.

If the multi-instance function has been enabled in the cluster and multiple HBase services have been installed, determine the HBase service for which the alarm is generated based on the value of ServiceName in Location. For example, if the value of ServiceName is HBase-1, change the operation object in the procedure from HBase to HBase-1.

Attribute

Parameters

Impact on the System

The cluster performance may deteriorate, affecting data read and write.

Possible Causes

• The number of HBase RegionServers is too small.
• There are excessive regions on a single RegionServer of HBase.
• The HBase RegionServer heap size is small.
• Resources are insufficient.
• Related parameters are not configured properly.

Procedure

Check whether related parameters are properly configured.

1. Log in to FusionInsight Manager and choose O&M > Alarm > Alarms. On the page that is displayed, check whether the alarm whose Alarm ID is 19008 or 19011 exists.
   • If yes, click View Help next to the alarm and rectify the fault by referring to the help document. Then, go to 3.
   • If no, go to 2.

2. On FusionInsight Manager, choose Cluster > Name of the desired cluster > Services > HBase. On the page that is disaplyed, click the Configuration tab then the All Configurations sub-tab, search for hbase.hstore.compaction.min, hbase.hstore.compaction.max, hbase.regionserver.thread.compaction.small, and hbase.regionserver.thread.compaction.throttle, and set them to larger values.
3. Check whether the alarm is cleared.
   • If yes, no further action is required.
   • If no, go to 4.

Collect the fault information.

4. On FusionInsight Manager, choose O&M. In the navigation pane on the left, choose Log > Download.
5. Expand the Service drop-down list, and select HBase for the target cluster.
6. Click in the upper right corner, and set Start Date and End Date for log collection to 10 minutes ahead of and after the alarm generation time, respectively. Then, click Download.
7. Contact O&M personnel and provide the collected logs.

Alarm Clearing

This alarm is automatically cleared after the fault is rectified.

Related Information

None