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https://issues.apache.org/jira/browse/HBASE-17256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15738187#comment-15738187
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Hudson commented on HBASE-17256:
--------------------------------

FAILURE: Integrated in Jenkins build HBase-0.98-on-Hadoop-1.1 #1296 (See 
[https://builds.apache.org/job/HBase-0.98-on-Hadoop-1.1/1296/])
HBASE-17256 Rpc handler monitoring will be removed when the task queue 
(apurtell: rev dc85895cbc2e16e993a68882a122b3229a24b877)
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/monitoring/TaskMonitor.java


> Rpc handler monitoring will be removed when the task queue is full
> ------------------------------------------------------------------
>
>                 Key: HBASE-17256
>                 URL: https://issues.apache.org/jira/browse/HBASE-17256
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0, 0.98.23, 1.2.4
>            Reporter: Guangxu Cheng
>            Assignee: Guangxu Cheng
>             Fix For: 2.0.0, 1.4.0, 0.98.24
>
>         Attachments: HBASE-17256-v1.patch
>
>
> The RPC handlers monitoring will displayed in the Web UI when the cluster has 
> just started. As time goes on, RPC handlers disappeared .
> We have the RPC handlers listed as tasks and stored in CircularFifoBuffer. 
> CircularFifoBuffer is a first in first out buffer with a fixed size that 
> replaces its oldest element if full.
> When we refresh the page, completed tasks will be removed from 
> CircularFifoBuffer.
> Not refresh the page for a long time, the oldest element (RPC handlers) will 
> be replaced by new tasks.



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