Bryan Beaudreault created HBASE-27892:
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Summary: Report memstore on-heap and off-heap size as jmx metrics
Key: HBASE-27892
URL: https://issues.apache.org/jira/browse/HBASE-27892
Project: HBase
Issue Type: Improvement
Reporter: Bryan Beaudreault
Currently we only report "memStoreSize" metric in sub=RegionServer bean. I've
noticed a big discrepancy between this metric and the RS UI's "Memstore On-Heap
Size". It seems like "memStoreSize" is the overall data size, while the on-heap
size is coming from our heap estimation which includes POJO heap overhead, etc.
I have a regionserver with only 750mb of "memStoreSize", but the on-heap size
is over 1gb. This is non-trivial for estimating overall heap size necessary
for a regionserver. Since we have the data, let's report it.
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