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https://issues.apache.org/jira/browse/HBASE-1326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12702599#action_12702599
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stack commented on HBASE-1326:
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Setting -Xms helped, right Ryan? Its how we're using what comes back from the
MXBean?
> hbase doesn't size memcache correctly under -XX:+UseG1GC
> --------------------------------------------------------
>
> Key: HBASE-1326
> URL: https://issues.apache.org/jira/browse/HBASE-1326
> Project: Hadoop HBase
> Issue Type: Bug
> Affects Versions: 0.20.0
> Environment: java 1.7
> Reporter: ryan rawson
> Fix For: 0.20.0
>
>
> I get this in the logfile:
> 2009-04-16 23:49:20,518 INFO
> org.apache.hadoop.hbase.regionserver.MemcacheFlusher: Forced flushing of
> <table redacted>,1239954535262 because global memcache limit of 3.2m
> exceeded; currently 3.2m and flushing till 2.0m
> With the experimental G1 GC, the heap size is created differently, and the
> way we calculate the size of memcache is flawed under this GC. This affects
> performance and makes things reallll slow.
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