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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17256) Rpc handler monitoring will be removed when the task queue is full
Date Mon, 05 Dec 2016 23:58:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15723798#comment-15723798
] 

Hudson commented on HBASE-17256:
--------------------------------

SUCCESS: Integrated in Jenkins build HBase-Trunk_matrix #2079 (See [https://builds.apache.org/job/HBase-Trunk_matrix/2079/])
HBASE-17256 Rpc handler monitoring will be removed when the task queue (tedyu: rev 3190605801fb18ac1c0d47fdc8964a93fab0d8f2)
* (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
>
>         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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