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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1908) Restructure data node code so that block sending/receiving is seperated from data transfer header handling
Date Fri, 21 Sep 2007 05:51:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12529316

Hadoop QA commented on HADOOP-1908:

-1 overall.  Here are the results of testing the latest attachment 
against trunk revision r577917.

    @author +1.  The patch does not contain any @author tags.

    javadoc +1.  The javadoc tool did not generate any warning messages.

    javac +1.  The applied patch does not generate any new compiler warnings.

    findbugs +1.  The patch does not introduce any new Findbugs warnings.

    core tests -1.  The patch failed core unit tests.

    contrib tests +1.  The patch passed contrib unit tests.

Test results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/802/testReport/
Findbugs warnings: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/802/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/802/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/802/console

This message is automatically generated.

> Restructure data node code so that block sending/receiving is seperated from data transfer
header handling
> ----------------------------------------------------------------------------------------------------------
>                 Key: HADOOP-1908
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1908
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>    Affects Versions: 0.14.1
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.15.0
>         Attachments: datanode.patch, datanodeRestructure.patch, datanodeRestructure.patch
> This jira is intended for code sharing. I'd like to have a BlockSender which is resposible
for reading a block from a disk and writing it to an output stream, and a BlockReceiver which
receives a block from an input stream, writes it to a disk,  and possibly writes it a mirror
ouput stream to support pipeline writes. Block sender and receiver code is independent of
any block IO protocols so it could be shared by block transfer, block write, block read, and
future block replacement introduced by data node rebalancing.

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