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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8468) 2 RPC calls for every file read in DFSClient#open(..) resulting in double Audit log entries
Date Wed, 01 Jul 2015 06:17:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14609610#comment-14609610
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Vinayakumar B commented on HDFS-8468:
-------------------------------------

bq. setCurrentPacket2Empty is in the branch but not in trunk. Should we push that refactor
to trunk? Actually it seems all branch changes in DFSOutputStream are applicable to trunk.
Actually its there. But name changed slightly to {{setCurrentPacketToEmpty}}. 'To' instead
of '2' as per comments.

> 2 RPC calls for every file read in DFSClient#open(..) resulting in double Audit log entries
> -------------------------------------------------------------------------------------------
>
>                 Key: HDFS-8468
>                 URL: https://issues.apache.org/jira/browse/HDFS-8468
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: HDFS-7285
>            Reporter: Vinayakumar B
>            Assignee: Vinayakumar B
>             Fix For: HDFS-7285
>
>         Attachments: HDFS-8468-HDFS-7285-02.patch, HDFS-8468-HDFS-7285.patch
>
>
> In HDFS-7285 branch, 
> To determine whether file is striped/not and get the Schema for the file, 2 RPCs done
to Namenode.
> This is resulting in double audit logs for every file read for both striped/non-striped.
> This will be a major impact in size of audit logs.



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