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https://issues.apache.org/jira/browse/HBASE-1326?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ryan rawson resolved HBASE-1326.
--------------------------------

    Resolution: Invalid

JVM bug, to workaround set -Xms 

> 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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