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Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is < number of segments
---------------------------------------------------------------------------------------------------------------------------------------------------------

Key: HADOOP-5895
URL: https://issues.apache.org/jira/browse/HADOOP-5895
Project: Hadoop Core
Issue Type: Bug
Reporter: Ravi Gummadi
Assignee: Ravi Gummadi
Fix For: 0.21.0


Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is < total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.

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  • Ravi Gummadi (JIRA) at May 22, 2009 at 8:18 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Ravi Gummadi updated HADOOP-5895:
    ---------------------------------

    Attachment: HADOOP-5895.patch

    In computeBytesInMerges, getPassFactor() can return factor < number of segments and even though n++ is done based on condition includeFinalMerge, that is not good enough for the while loop to be executed.

    Attaching patch with the fix. Please review and provide your comments.
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is < number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is < total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at May 22, 2009 at 8:48 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Ravi Gummadi updated HADOOP-5895:
    ---------------------------------

    Description: Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572. (was: Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is < total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.)
    Summary: Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments (was: Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is < number of segments)

    Issue is when mergeFactor > number of segments (not less than).
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Jothi Padmanabhan (JIRA) at May 25, 2009 at 5:03 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12712629#action_12712629 ]

    Jothi Padmanabhan commented on HADOOP-5895:
    -------------------------------------------

    Using a flag to control the number of iterations in includeFinalMerge would be more readable than modifying the variable n itself, no?
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at May 25, 2009 at 5:05 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Ravi Gummadi updated HADOOP-5895:
    ---------------------------------

    Attachment: HADOOP-5895.v1.patch

    Agreed Jothi.
    Here is the patch with a flag doing the work of considering final merge as part of calculation of estimated input bytes of merges.
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Jothi Padmanabhan (JIRA) at May 25, 2009 at 10:39 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12712684#action_12712684 ]

    Jothi Padmanabhan commented on HADOOP-5895:
    -------------------------------------------

    +1
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at May 25, 2009 at 11:10 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Ravi Gummadi updated HADOOP-5895:
    ---------------------------------

    Release Note: This patch fixes the issue of final merge not getting included in the calculation of estimated bytes in merges in map task when the merge factor is > total number of segments.
    Status: Patch Available (was: Open)
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at May 26, 2009 at 4:00 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Ravi Gummadi updated HADOOP-5895:
    ---------------------------------

    Status: Open (was: Patch Available)
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at May 26, 2009 at 4:00 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Ravi Gummadi updated HADOOP-5895:
    ---------------------------------

    Attachment: HADOOP-5895.v1.1.patch

    Attaching a new patch fixing a minor issue for the same log message.
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at May 26, 2009 at 4:02 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Ravi Gummadi updated HADOOP-5895:
    ---------------------------------

    Status: Patch Available (was: Open)
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at May 26, 2009 at 4:03 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711990#action_12711990 ]

    Ravi Gummadi edited comment on HADOOP-5895 at 5/25/09 9:01 PM:
    ---------------------------------------------------------------

    In computeBytesInMerges, getPassFactor() can return factor > number of segments and even though n++ is done based on condition includeFinalMerge, that is not good enough for the while loop to be executed.

    Attaching patch with the fix. Please review and provide your comments.

    was (Author: ravidotg):
    In computeBytesInMerges, getPassFactor() can return factor < number of segments and even though n++ is done based on condition includeFinalMerge, that is not good enough for the while loop to be executed.

    Attaching patch with the fix. Please review and provide your comments.
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at May 26, 2009 at 4:44 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12712852#action_12712852 ]

    Ravi Gummadi commented on HADOOP-5895:
    --------------------------------------

    Unit tests passed on my machine.

    ant test-patch gave:

    [exec] -1 overall.
    [exec]
    [exec] +1 @author. The patch does not contain any @author tags.
    [exec]
    [exec] -1 tests included. The patch doesn't appear to include any new or modified tests.
    [exec] Please justify why no tests are needed for this patch.
    [exec]
    [exec] +1 javadoc. The javadoc tool did not generate any warning messages.
    [exec]
    [exec] +1 javac. The applied patch does not increase the total number of javac compiler warnings.
    [exec]
    [exec] +1 findbugs. The patch does not introduce any new Findbugs warnings.
    [exec]
    [exec] +1 Eclipse classpath. The patch retains Eclipse classpath integrity.
    [exec]
    [exec] +1 release audit. The applied patch does not increase the total number of release audit warnings.
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Jothi Padmanabhan (JIRA) at May 27, 2009 at 4:06 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12713397#action_12713397 ]

    Jothi Padmanabhan commented on HADOOP-5895:
    -------------------------------------------

    +1 for the last patch
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Hadoop QA (JIRA) at May 27, 2009 at 1:24 pm
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12713566#action_12713566 ]

    Hadoop QA commented on HADOOP-5895:
    -----------------------------------

    -1 overall. Here are the results of testing the latest attachment
    http://issues.apache.org/jira/secure/attachment/12408983/HADOOP-5895.v1.1.patch
    against trunk revision 779066.

    +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 tests are needed for 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 warnings.

    +1 Eclipse classpath. The patch retains Eclipse classpath integrity.

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

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

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

    Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/411/testReport/
    Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/411/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
    Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/411/artifact/trunk/build/test/checkstyle-errors.html
    Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/411/console

    This message is automatically generated.
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at May 27, 2009 at 4:28 pm
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12713631#action_12713631 ]

    Ravi Gummadi commented on HADOOP-5895:
    --------------------------------------

    Unit tests failures shown above are not related to this patch.
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Devaraj Das (JIRA) at May 28, 2009 at 12:14 pm
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Devaraj Das updated HADOOP-5895:
    --------------------------------

    Resolution: Fixed
    Hadoop Flags: [Reviewed]
    Status: Resolved (was: Patch Available)

    I just committed this. Thanks, Ravi!
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at Jun 2, 2009 at 5:06 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715376#action_12715376 ]

    Ravi Gummadi commented on HADOOP-5895:
    --------------------------------------

    I dont think we need a new testcase for this as the issue is seen in the log message itself just before final merge in map tasks. So I haven't added new testcase.
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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  • Ravi Gummadi (JIRA) at Jun 2, 2009 at 5:08 am
    [ https://issues.apache.org/jira/browse/HADOOP-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715377#action_12715377 ]

    Ravi Gummadi commented on HADOOP-5895:
    --------------------------------------

    Also, tested manually with many jobs like loadgen, sort, wordcount(in addition to unit tests) to check if -ve number can be seen in the log message in Merger.
    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and merge factor is > number of segments
    ---------------------------------------------------------------------------------------------------------------------------------------------------------

    Key: HADOOP-5895
    URL: https://issues.apache.org/jira/browse/HADOOP-5895
    Project: Hadoop Core
    Issue Type: Bug
    Reporter: Ravi Gummadi
    Assignee: Ravi Gummadi
    Fix For: 0.21.0

    Attachments: HADOOP-5895.patch, HADOOP-5895.v1.1.patch, HADOOP-5895.v1.patch


    Log message shows -ve number of bytes to be merged in the final merge pass when there are no intermediate merges and the mergeFactor is > total number of segments to be merged. This issue is because of code changes done in HADOOP-5572.
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