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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4265) BKJM doesn't take advantage of speculative reads
Date Thu, 12 Feb 2015 03:58:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14317541#comment-14317541
] 

Uma Maheswara Rao G commented on HDFS-4265:
-------------------------------------------

+1 for the patch. Thanks Rakesh. I will push this in later today.

> BKJM doesn't take advantage of speculative reads
> ------------------------------------------------
>
>                 Key: HDFS-4265
>                 URL: https://issues.apache.org/jira/browse/HDFS-4265
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha
>    Affects Versions: 2.2.0
>            Reporter: Ivan Kelly
>            Assignee: Rakesh R
>         Attachments: 0005-HDFS-4265.patch, 0006-HDFS-4265.patch, 0007-HDFS-4265.patch,
0009-HDFS-4265.patch, 001-HDFS-4265.patch, 002-HDFS-4265.patch, 003-HDFS-4265.patch, 004-HDFS-4265.patch
>
>
> BookKeeperEditLogInputStream reads entry at a time, so it doesn't take advantage of the
speculative read mechanism introduced by BOOKKEEPER-336.



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