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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11534) Add counters for number of blocks in pending IBR
Date Wed, 15 Mar 2017 20:14:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15926891#comment-15926891
] 

Arpit Agarwal commented on HDFS-11534:
--------------------------------------

Also please see if you can add a unit test. The IncrementalBlockReportManager doesn't have
many dependencies so an isolated unit test should be straightforward.

> Add counters for number of blocks in pending IBR
> ------------------------------------------------
>
>                 Key: HDFS-11534
>                 URL: https://issues.apache.org/jira/browse/HDFS-11534
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs
>            Reporter: Xiaobing Zhou
>            Assignee: Xiaobing Zhou
>         Attachments: HDFS-11534.000.patch
>
>
> IBR can be sent in batch. For the sake of diagnosis, it's helpful to understand work
load of pending queue, e.g. how many blocks as total, how many blocks in status of RECEIVING_BLOCK,
RECEIVED_BLOCK, and DELETED_BLOCK, respectively. Also the metrics can be exposed to JMX.



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