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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6856) SequenceFile and MapFile need cleanup to remove redundant constructors
Date Sat, 10 Jul 2010 07:47:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12887010#action_12887010

Hadoop QA commented on HADOOP-6856:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 962677.

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

    +1 tests included.  The patch appears to include 2 new or modified tests.

    -1 javadoc.  The javadoc tool appears to have generated 1 warning messages.

    -1 javac.  The applied patch generated 1035 javac compiler warnings (more than the trunk's
current 1017 warnings).

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

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

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

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

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h1.grid.sp2.yahoo.net/86/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h1.grid.sp2.yahoo.net/86/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h1.grid.sp2.yahoo.net/86/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h1.grid.sp2.yahoo.net/86/console

This message is automatically generated.

> SequenceFile and MapFile need cleanup to remove redundant constructors
> ----------------------------------------------------------------------
>                 Key: HADOOP-6856
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6856
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: io
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>             Fix For: 0.22.0
>         Attachments: h-6856.patch, h-6856.patch
> Currently there are 2 public SequenceFile.Reader constructors, 3 public SequenceFile.Writer
constructors, 9 public SequenceFile.createWriter, 2 public MapFile.Reader constructors, and
8 public MapFile.Writer constructors. All of with various historical combinations of parameters
that don't cover the entire space.
> All of this makes it *very* difficult to add new optional parameters to SequenceFile
and MapFile. 
> I'd like change to the style of FileContext.create with option parameters. I'll implement
one public SequenceFile.Reader constructor and one public SequenceFile.createWriter and implement
all of the current variants based on those two. I'll do the same for MapFile.Reader and MapFile.Writer
including passing parameters down to the underlying SequenceFile.

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