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HBase Region Server Heap Configuration

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HBase Region Server Heap Configuration

New Contributor

I am using hbase version 1.0 through cloudera (version 5.5.2). I need to benchmark query performance (through phoenix 4.6) on hbase with and without bucket cache.

 

I have configured java heap size on the region server as 3.5 GB on the cloudera manager console though the region server web ui (server metrics -> Memory tab) shows the max heap to be 1.7. hbase.block.cache.size is configured to be 0.6, hbase.regionserver.global.memstore.lowerLimit is configured to be 0.1 while hbase.regionserver.global.memstore.upperLimit is configured to be 0.2 so that the blockcache + memstore combination does not exceed 0.8. 
 
What could be the reason behind the difference shown on the region server web ui?
 
Appreciate your replies.
 
Thanks,
Amit