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https://issues.apache.org/jira/browse/PIG-3727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13902923#comment-13902923
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Rohini Palaniswamy commented on PIG-3727:
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Handling the optimizations in PIG-3766. Will use this jira just to fix the self
join after PIG-3757 goes in as it changes the way splits are handled.
> Fix split + skewed join
> -----------------------
>
> Key: PIG-3727
> URL: https://issues.apache.org/jira/browse/PIG-3727
> Project: Pig
> Issue Type: Sub-task
> Components: tez
> Affects Versions: tez-branch
> Reporter: Cheolsoo Park
> Assignee: Rohini Palaniswamy
> Fix For: tez-branch
>
>
> The e2e SkewedJoin_6 test runs the following query-
> {code}
> a = load ':INPATH:/singlefile/studenttab10k';
> b = filter a by $1 > 25;
> c = join a by $0, b by $0 using 'skewed' parallel 7;
> store c into ':OUTPATH:';
> {code}
> Currently, this fails with a compilation error in TezCompiler. Basically,
> visitSkewedJoin() doesn't handle the POSplit that is inserted between load
> and join.
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