hbase doesn't size memcache correctly under -XX:+UseG1GC
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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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