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Posted to dev@crunch.apache.org by "Josh Wills (JIRA)" <ji...@apache.org> on 2015/01/31 02:17:34 UTC
[jira] [Resolved] (CRUNCH-494) Unable to union large number of
PCollections
[ https://issues.apache.org/jira/browse/CRUNCH-494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Josh Wills resolved CRUNCH-494.
-------------------------------
Resolution: Fixed
Fix Version/s: 0.12.0
Pushed to master-- hoping not to have to cut another 0.8.x release if at all avoidable, but ping me if you feel differently.
> Unable to union large number of PCollections
> ---------------------------------------------
>
> Key: CRUNCH-494
> URL: https://issues.apache.org/jira/browse/CRUNCH-494
> Project: Crunch
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.8.3
> Reporter: Surbhi Mungre
> Assignee: Josh Wills
> Priority: Minor
> Fix For: 0.12.0
>
> Attachments: CRUNCH-494.patch
>
>
> If you try to union large number of PCollections(~5K), then Crunch throws StackOverflowError exception.
> {noformat}
> java.lang.StackOverflowError
> at com.google.common.collect.AbstractIndexedListIterator.<init>(AbstractIndexedListIterator.java:68)
> at com.google.common.collect.AbstractIndexedListIterator.<init>(AbstractIndexedListIterator.java:54)
> at com.google.common.collect.Iterators$12.<init>(Iterators.java:1072)
> at com.google.common.collect.Iterators.forArray(Iterators.java:1072)
> at com.google.common.collect.RegularImmutableList.iterator(RegularImmutableList.java:68)
> at com.google.common.collect.RegularImmutableList.iterator(RegularImmutableList.java:31)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:291)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> at org.apache.crunch.impl.dist.collect.PCollectionImpl.getTargetDependencies(PCollectionImpl.java:292)
> {noformat}
> Here is a simple test which can reproduce the issue.
> https://gist.github.com/anonymous/22f08511604341d0ffda
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