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https://issues.apache.org/jira/browse/HADOOP-4041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715075#action_12715075
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Tom White commented on HADOOP-4041:
-----------------------------------
I think this is saying that the HTML file for LocalDirAllocator generated by
JDiff doesn't have an Apache license. It probably makes sense to exclude the
JDiff files from the release audit tool.
Otherwise this looks good. I'd like to commit it soon.
> IsolationRunner does not work as documented
> -------------------------------------------
>
> Key: HADOOP-4041
> URL: https://issues.apache.org/jira/browse/HADOOP-4041
> Project: Hadoop Core
> Issue Type: Bug
> Components: documentation, mapred
> Affects Versions: 0.18.0
> Reporter: Yuri Pradkin
> Assignee: Philip Zeyliger
> Attachments: HADOOP-4041-v2.patch, HADOOP-4041-v3.patch,
> HADOOP-4041-v4.patch, hadoop-4041.patch,
> org.apache.hadoop.fs.LocalDirAllocator.html
>
>
> IsolationRunner does not work as documented in the tutorial.
> The tutorial says "To use the IsolationRunner, first set
> keep.failed.tasks.files to true (also see keep.tasks.files.pattern)."
> Should be:
> keep.failed.task.files (not tasks)
> After the above was set (quoted from my message on hadoop-core):
> > After the task
> > hung, I failed it via the web interface. Then I went to the node that was
> > running this task
> >
> > $ cd ...local/taskTracker/jobcache/job_200808071645_0001/work
> > (this path is already different from the tutorial's)
> >
> > $ hadoop org.apache.hadoop.mapred.IsolationRunner ../job.xml
> > Exception in thread "main" java.lang.NullPointerException
> > at
> > org.apache.hadoop.mapred.IsolationRunner.main(IsolationRunner.java:164)
> >
> > Looking at IsolationRunner code, I see this:
> >
> > 164 File workDirName = new File(lDirAlloc.getLocalPathToRead(
> > 165 TaskTracker.getJobCacheSubdir()
> > 166 + Path.SEPARATOR +
> > taskId.getJobID()
> > 167 + Path.SEPARATOR + taskId
> > 168 + Path.SEPARATOR + "work",
> > 169 conf). toString());
> >
> > I.e. it assumes there is supposed to be a taskID subdirectory under the job
> > dir, but:
> > $ pwd
> > ...mapred/local/taskTracker/jobcache/job_200808071645_0001
> > $ ls
> > jars job.xml work
> >
> > -- it's not there.
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