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From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10475) Adding metrics and warn/debug logs for long FSD lock
Date Thu, 25 Aug 2016 00:06:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15435977#comment-15435977
] 

Xiaoyu Yao commented on HDFS-10475:
-----------------------------------

Thanks [~zhz] for the heads up. This log part is covered by HDFS-9145 but the metrics are
not. I've update the title to reflect it. 

> Adding metrics and warn/debug logs for long FSD lock
> ----------------------------------------------------
>
>                 Key: HDFS-10475
>                 URL: https://issues.apache.org/jira/browse/HDFS-10475
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>
> This is a follow up of the comment on HADOOP-12916 and [here|https://issues.apache.org/jira/browse/HDFS-9924?focusedCommentId=15310837&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15310837]
add more metrics and WARN/DEBUG logs for long FSD/FSN locking operations on namenode similar
to what we have for slow write/network WARN/metrics on datanode.



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