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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10924) Add a new instrumented read-write lock
Date Mon, 10 Oct 2016 06:44:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15561465#comment-15561465
] 

Chris Douglas commented on HDFS-10924:
--------------------------------------

If this is being committed to common, the issue should be moved to the COMMON project.

Sorry, I'd missed that this was moving code from HDFS-9668. I agree with [~arpitagarwal]'s
[comment|https://issues.apache.org/jira/browse/HDFS-9668?focusedCommentId=15531447&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15531447]
on reducing the variety of lock instrumentation classes.

> Add a new instrumented read-write lock
> --------------------------------------
>
>                 Key: HDFS-10924
>                 URL: https://issues.apache.org/jira/browse/HDFS-10924
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Jingcheng Du
>            Assignee: Jingcheng Du
>         Attachments: HDFS-10924-2.patch, HDFS-10924-3.patch, HDFS-10924-4.patch, HDFS-10924.patch
>
>
> Add a new instrumented read-write lock in hadoop common, so that the HDFS-9668 can use
this to improve the locking in FsDatasetImpl



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