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Posted to dev@hbase.apache.org by "Guangxu Cheng (JIRA)" <ji...@apache.org> on 2016/12/05 08:24:58 UTC

[jira] [Created] (HBASE-17256) Rpc handler monitoring will be removed when the task queue is full

Guangxu Cheng created HBASE-17256:
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             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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