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https://issues.apache.org/jira/browse/MAPREDUCE-6201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15886754#comment-15886754
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Robert Kanter commented on MAPREDUCE-6201:
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With 100% disk usage, the other problems I was referring to would be OS-level
problems. If you've ever tried to use Windows or a Mac with only a few
megabytes of disk space level, you'll run into all kinds of funky problems.
However, I was thinking about this more, and whoever/whatever running the test
might have a quota on the disk, which would trigger the same issue, without the
OS being affected, so I think you're right that we shouldn't do 100.
A more clear message failing the test would be best. Maybe assert that the
configured amount of disk space is free at the beginning of the test? I do
think that setting this to a higher value like 95 or 99 or something is also
reasonable to do given that the job the test runs shouldn't generate much data.
> TestNetworkedJob fails on trunk
> -------------------------------
>
> Key: MAPREDUCE-6201
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6201
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Robert Kanter
> Assignee: Peter Bacsko
> Attachments: MAPREDUCE-6201-001.patch, MAPREDUCE-6201-002.patch,
> MAPREDUCE-6201-003.patch
>
>
> Currently, {{TestNetworkedJob}} is failing on trunk:
> {noformat}
> Running org.apache.hadoop.mapred.TestNetworkedJob
> Tests run: 5, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 215.01 sec
> <<< FAILURE! - in org.apache.hadoop.mapred.TestNetworkedJob
> testNetworkedJob(org.apache.hadoop.mapred.TestNetworkedJob) Time elapsed:
> 67.363 sec <<< FAILURE!
> java.lang.AssertionError: expected:<0> but was:<2>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:743)
> at org.junit.Assert.assertEquals(Assert.java:118)
> at org.junit.Assert.assertEquals(Assert.java:555)
> at org.junit.Assert.assertEquals(Assert.java:542)
> at
> org.apache.hadoop.mapred.TestNetworkedJob.testNetworkedJob(TestNetworkedJob.java:195)
> {noformat}
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