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From "Guangxu Cheng (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-17256) Rpc handler monitoring will be removed when the task queue is full
Date Mon, 05 Dec 2016 08:24:58 GMT
Guangxu Cheng created HBASE-17256:
-------------------------------------

             Summary: 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: 1.2.4, 0.98.23
            Reporter: Guangxu Cheng


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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