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https://issues.apache.org/jira/browse/HDFS-1713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13002304#comment-13002304
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Jitendra Nath Pandey commented on HDFS-1713:
--------------------------------------------

-1 overall.  

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

    -1 tests included.  The patch doesn't appear to include any new or modified 
tests.
                        Please justify why no new tests are needed for this 
patch.
                        Also please list what manual steps were performed to 
verify this patch.

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

    +1 javac.  The applied patch does not increase the total number of javac 
compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) 
warnings.

    +1 release audit.  The applied patch does not increase the total number of 
release audit warnings.

    -1 system test framework.  The patch failed system test framework compile.

system test framework failure is unrelated.

> Hdfs Federation: Prevent DataBlockScanner from running in tight loop 
> ---------------------------------------------------------------------
>
>                 Key: HDFS-1713
>                 URL: https://issues.apache.org/jira/browse/HDFS-1713
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>    Affects Versions: Federation Branch
>            Reporter: Jitendra Nath Pandey
>            Assignee: Jitendra Nath Pandey
>             Fix For: Federation Branch
>
>         Attachments: HDFS-1713.1.patch
>
>
> In some test scenarios, if block pools are added and removed frequently, the 
> block scanner runs in tight loop.

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