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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7753) Support fadvise and sync_data_range in NativeIO, add ReadaheadPool class
Date Thu, 27 Oct 2011 22:26:34 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13137641#comment-13137641
] 

Hudson commented on HADOOP-7753:
--------------------------------

Integrated in Hadoop-Common-0.23-Commit #86 (See [https://builds.apache.org/job/Hadoop-Common-0.23-Commit/86/])
    HADOOP-7753. Support fadvise and sync_file_range in NativeIO. Add ReadaheadPool infrastructure
for use in HDFS and MR. Contributed by Todd Lipcon.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1190066
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/ReadaheadPool.java
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/nativeio/NativeIO.java
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/native/configure.ac
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/nativeio/NativeIO.c
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/io/nativeio/file_descriptor.c
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/nativeio/TestNativeIO.java

                
> Support fadvise and sync_data_range in NativeIO, add ReadaheadPool class
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-7753
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7753
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: io, native, performance
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.23.0
>
>         Attachments: hadoop-7753.txt, hadoop-7753.txt, hadoop-7753.txt, hadoop-7753.txt,
hadoop-7753.txt
>
>
> This JIRA adds JNI wrappers for sync_data_range and posix_fadvise. It also implements
a ReadaheadPool class for future use from HDFS and MapReduce.

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