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From "Binglin Chang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5574) Remove buffer copy in BlockReader.skip
Date Tue, 03 Dec 2013 07:07:36 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13837414#comment-13837414
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Binglin Chang commented on HDFS-5574:
-------------------------------------

The failed test is unrelated. 
TestBalancerWithNodeGroup is traced in HDFS-5580
TestFsDatasetCache: I looked into the failed log, the timeout is caused by a race condition,
luckily after HDFS-5556 committed, the race condition no longer apply, so there should be
no problem now.


> Remove buffer copy in BlockReader.skip
> --------------------------------------
>
>                 Key: HDFS-5574
>                 URL: https://issues.apache.org/jira/browse/HDFS-5574
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Binglin Chang
>            Assignee: Binglin Chang
>            Priority: Trivial
>         Attachments: HDFS-5574.v1.patch, HDFS-5574.v2.patch
>
>
> BlockReaderLocal.skip and RemoteBlockReader.skip uses a temp buffer to read data to this
buffer, it is not necessary. 



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