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Posted to issues@drill.apache.org by "Jacques Nadeau (JIRA)" <ji...@apache.org> on 2014/06/09 08:49:17 UTC
[jira] [Updated] (DRILL-928) Regression: Forcing a merge join
instead of a hash join results in a Failure while reading vector. Expected
vector class of org.apache.drill.exec.vector.BigIntVector but was holding
vector class org.apache.drill.exec.vector.VarBinaryVector.
[ https://issues.apache.org/jira/browse/DRILL-928?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jacques Nadeau updated DRILL-928:
---------------------------------
Assignee: Jinfeng Ni
> Regression: Forcing a merge join instead of a hash join results in a Failure while reading vector. Expected vector class of org.apache.drill.exec.vector.BigIntVector but was holding vector class org.apache.drill.exec.vector.VarBinaryVector.
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DRILL-928
> URL: https://issues.apache.org/jira/browse/DRILL-928
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Reporter: Ramana Inukonda Nagaraj
> Assignee: Jinfeng Ni
> Priority: Critical
>
> Test case:
> alter session set `planner.enable_hashjoin` = false;
> select count(*)
> from supplier s, lineitem l, orders o
> where s.s_suppkey = l.l_suppkey
> and o.o_orderkey = l.l_orderkey
> and l.l_shipdate between date '1995-01-01' and date '1995-12-31' ;
> If the alter session is removed the query works fine. Which leads me to believe its something in either the mergejoin or the sort before the mergejoin step.
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