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https://issues.apache.org/jira/browse/DRILL-2900?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jacques Nadeau updated DRILL-2900:
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Fix Version/s: 1.2.0
> Joins are not getting parallelized in TestTpchDistributed unit tests
> --------------------------------------------------------------------
>
> Key: DRILL-2900
> URL: https://issues.apache.org/jira/browse/DRILL-2900
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Affects Versions: 0.8.0
> Reporter: Aman Sinha
> Assignee: Jinfeng Ni
> Fix For: 1.2.0
>
>
> The suite of unit tests in org.apache.drill.TestTpchDistributed are supposed
> to have parallel joins, parallel aggregations and sort. In order to force
> parallelism, the slice_target value is set to 10 (default is 100K). However,
> it looks like the plans of at least a few queries that I tried (query 03, 05,
> 14) did not have parallelism for the hash joins. The aggregations and sort
> do have Exchanges, so they are getting parallelized.
> There is a likelihood that many plans have BroadcastExchange on the right
> input of the join and since the left input of the join is typically a single
> file we may be dropping the exchange on the right input. This should be
> fixed.
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