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From "Ted Yu (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 10:40:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15721907#comment-15721907

Ted Yu commented on HBASE-17256:

Is the call to purgeExpiredTasks() needed for createRPCStatus() ?

> 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
>         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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