Add a parameter to change keepAliveTime of Htable thread pool.
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Key: HBASE-4970
URL: https://issues.apache.org/jira/browse/HBASE-4970
Project: HBase
Issue Type: Improvement
Components: client
Reporter: gaojinchao
Assignee: gaojinchao
Priority: Trivial
In my cluster, I changed keepAliveTime from 60 s to 3600 s. Increasing RES is
slowed down.
Why increasing keepAliveTime of HBase thread pool is slowing down our problem
occurance [RES value increase]?
You can go through the source of sun.nio.ch.Util. Every thread hold 3
softreference of direct buffer(mustangsrc) for reusage. The code names the 3
softreferences buffercache. If the buffer was all occupied or none was suitable
in size, and new request comes, new direct buffer is allocated. After the
service, the bigger one replaces the smaller one in buffercache. The replaced
buffer is released.
So I think we can add a parameter to change keepAliveTime of Htable thread pool.
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