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From "Liyin Liang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-5679) TestJobHistoryParsing has race condition
Date Thu, 12 Dec 2013 03:13:06 GMT
Liyin Liang created MAPREDUCE-5679:
--------------------------------------

             Summary: TestJobHistoryParsing has race condition
                 Key: MAPREDUCE-5679
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5679
             Project: Hadoop Map/Reduce
          Issue Type: Bug
    Affects Versions: 2.2.0
            Reporter: Liyin Liang


org.apache.hadoop.mapreduce.v2.hs.TestJobHistoryParsing can fail because of race condition.
{noformat}
testHistoryParsingWithParseErrors(org.apache.hadoop.mapreduce.v2.hs.TestJobHistoryParsing)
 Time elapsed: 4.102 sec  <<< ERROR!
java.io.IOException: Unable to initialize History Viewer
        at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:520)
        at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:398)
        at org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:137)
        at org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:339)
        at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:798)
        at org.apache.hadoop.mapreduce.jobhistory.JobHistoryParser.<init>(JobHistoryParser.java:86)
        at org.apache.hadoop.mapreduce.jobhistory.HistoryViewer.<init>(HistoryViewer.java:85)
        at org.apache.hadoop.mapreduce.v2.hs.TestJobHistoryParsing.checkHistoryParsing(TestJobHistoryParsing.java:339)
        at org.apache.hadoop.mapreduce.v2.hs.TestJobHistoryParsing.testHistoryParsingWithParseErrors(TestJobHistoryParsing.java:125)
{noformat}

In the checkHistoryParsing() function, after 
{code}
HistoryFileInfo fileInfo = jobHistory.getJobFileInfo(jobId);
{code}
a thread named MoveIntermediateToDone will be launched to move history file from done_intermediate
to done directory.
If the history file is moved, 
{code}
      HistoryViewer viewer = new HistoryViewer(fc.makeQualified(
          fileInfo.getHistoryFile()).toString(), conf, true);
{code}
will throw IOException´╝îbecause the history file is not found.



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