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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2463) Job History files are not moving to done folder when job history location is hdfs location
Date Thu, 19 May 2011 20:10:47 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13036417#comment-13036417
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Todd Lipcon commented on MAPREDUCE-2463:
----------------------------------------

A few nits on the test cases:
- can you please make the constants in TestJobHistory capitalized names, eg LOG_DIR and BUILD_DIR
instead of hLogDir and buildDir?
- the constant hLogDir is only used to constract the variable "logDir" twice - why not just
make the constant like:
{code}
private static final String LOCAL_LOG_DIR_URI = "file:///" + new File(System.getProperty("hadoop.log.dir")).getAbsolutePath()
+ File.separator + "history";
{code}

If you could also add a brief javadoc for each of the test cases explaining what it's testing,
that would be nice (for example "tests the case where the log directory is on local disk,
the done folder is on HDFS, and the default FS is local"


> Job History files are not moving to done folder when job history location is hdfs location
> ------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2463
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2463
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>    Affects Versions: 0.23.0
>            Reporter: Devaraj K
>            Assignee: Devaraj K
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2463-1.patch, MAPREDUCE-2463.patch
>
>
> If "mapreduce.jobtracker.jobhistory.location" is configured as HDFS location then either
during initialization of Job Tracker (while moving old job history files) or after completion
of the job, history files are not moving to done and giving following exception.
> {code:xml} 
> 2011-04-29 15:27:27,813 ERROR org.apache.hadoop.mapreduce.jobhistory.JobHistory: Unable
to move history file to DONE folder.
> java.lang.IllegalArgumentException: Wrong FS: hdfs://10.18.52.146:9000/history/job_201104291518_0001_root,
expected: file:///
> 	at org.apache.hadoop.fs.FileSystem.checkPath(FileSystem.java:402)
> 	at org.apache.hadoop.fs.RawLocalFileSystem.pathToFile(RawLocalFileSystem.java:58)
> 	at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:419)
> 	at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:294)
> 	at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:215)
> 	at org.apache.hadoop.fs.FileSystem.copyFromLocalFile(FileSystem.java:1516)
> 	at org.apache.hadoop.fs.FileSystem.copyFromLocalFile(FileSystem.java:1492)
> 	at org.apache.hadoop.fs.FileSystem.moveFromLocalFile(FileSystem.java:1482)
> 	at org.apache.hadoop.mapreduce.jobhistory.JobHistory.moveToDoneNow(JobHistory.java:348)
> 	at org.apache.hadoop.mapreduce.jobhistory.JobHistory.access$200(JobHistory.java:61)
> 	at org.apache.hadoop.mapreduce.jobhistory.JobHistory$1.run(JobHistory.java:439)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:619)
> {code} 

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