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We are seeing more GC duration pause critical alerts in HBase Region Servers

We are seeing more GC duration pause critical alerts in HBase Region Servers

Rising Star

Hello Team, Can some one please help us to understand whats causing the issue.

 

Our Region Server Memory configurations:

================================

 

HBASE_REGIONSERVER_OPTS:
========================
-XX:+UseG1GC -XX:MaxGCPauseMillis=200 -XX:+ParallelRefProcEnabled -XX:ParallelGCThreads=48 -XX:-ResizePLAB

 

HBase Master OPTS:

================

 

-XX:+UseG1GC -XX:MaxGCPauseMillis=200 -XX:+ParallelRefProcEnabled -XX:ParallelGCThreads=24 -XX:-ResizePLAB

 

block cache size = 0.4
MemStore size = 0.25

Heap size of Region Server = 32 GB

our GC threshold limits are warning 30.0 and critical 60.0 

 

 

And sometimes we are seeing MemStore full errors in region servers and which is causing the region server connectivity issues with cluster.

 

Please help me to resolve the issue and let me know do we needs to increase or add any of the configurations in GC settings.

 

Thanks & Regards,

Vinod

 

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