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https://issues.apache.org/jira/browse/HBASE-15155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15111923#comment-15111923
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Anoop Sam John commented on HBASE-15155:
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bq. private List<TaskAndWeakRefPair> rpcHandlerTasks = Lists.newArrayList();
We add tasks to this List. Who will remove it?
The other one is CircularFifoBuffer.
> Show All RPC handler tasks stop working after cluster is under heavy load for
> a while
> -------------------------------------------------------------------------------------
>
> Key: HBASE-15155
> URL: https://issues.apache.org/jira/browse/HBASE-15155
> Project: HBase
> Issue Type: Bug
> Components: monitoring
> Affects Versions: 0.98.0, 1.0.0, 0.94.19
> Reporter: Tianying Chang
> Assignee: Tianying Chang
> Attachments: hbase-15155.patch
>
>
> After we upgrade from 94.7 to 94.26 and 1.0, we found that "Show All RPC
> handler status" link on RS webUI stops working after running in production
> cluster with relatively high load for several days.
> Turn out to be it is a bug introduced by
> https://issues.apache.org/jira/browse/HBASE-10312 The BoundedFIFOBuffer cause
> RPCHandler Status overriden/removed permanently when there is a spike of
> non-RPC tasks status that is over the MAX_SIZE (1000). So as long as the RS
> experienced "high" load once, the RPC status monitoring is gone forever,
> until RS is restarted.
> We added a unit test that can repro this. And the fix can pass the test.
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