Kannan Muthukkaruppan created HBASE-6727:
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Summary: [89-fb] allow HBaseServers's callqueue to be better
configurable to avoid OOMs
Key: HBASE-6727
URL: https://issues.apache.org/jira/browse/HBASE-6727
Project: HBase
Issue Type: Bug
Reporter: Kannan Muthukkaruppan
Assignee: Kannan Muthukkaruppan
The callQueue size (where requests get queued up if all handlers are busy) is a
LinkedBlockingQueue of size 100*# of handlers. So, with say 300 handler
threads, the call queue can have upto 30k entries queued up. If the requests
are large enough-- then this can result in OOM or severe GC pauses.
Ideally, we should allow this param to be separately configurable independent
of the # of handlers; and better still be able to specify a memory size based
limit, instead of a # of entries based limit.
[I have not looked at the trunk version for this issue. So it may or may not be
relevant there.]
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