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https://issues.apache.org/jira/browse/SPARK-15673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon updated SPARK-15673:
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Labels: bulk-closed (was: )
> Indefinite hanging issue with combination of cache, sort and unionAll
> ---------------------------------------------------------------------
>
> Key: SPARK-15673
> URL: https://issues.apache.org/jira/browse/SPARK-15673
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.6.0, 1.6.1
> Environment: I am running the test code on both a hortonworks sandbox
> and also on AWS EMR / EC2.
> Reporter: Jamie Hutton
> Priority: Major
> Labels: bulk-closed
> Attachments: HangingTest.scala
>
>
> I have raised a couple of bugs to do with spark hanging. One of the previous
> ones (https://issues.apache.org/jira/browse/SPARK-15000) has been resolved in
> 1.6.1 but the following example is still an issue in 1.6.1.
> The code below is a self-contained test case which generates some data and
> will lead to the hanging behaviour when run in spark-submit in 1.6.0 or
> 1.6.1. Strangely the code also hangs in spark-shell in 1.6.0 but it doesnt
> seem to in 1.6.1 (hence providing the main method test below). I run this
> using:
> spark-submit --class HangingTest --master local <path-to-compiled-jar>
> The hanging doesnt occur if you remove either of the first two cache steps OR
> the sort steps (I have added comments to this affect below). We have hit
> quite a few indefinite hanging issues with spark (another is this:
> https://issues.apache.org/jira/browse/SPARK-15002). There seems to be a
> rather fundamental issue with chaining steps together and using the cache
> call.
> The bug seems to be confined to reading data out of hadoop - if we put the
> data onto a local drive (using file://) then the hanging stops happening.
> This may seem rather a convoluted test case but that is mainly because I have
> stripped the code back to the simplest possible code that causes the issue.
> *CODE ATTACHED*
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