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https://issues.apache.org/jira/browse/HIVE-23389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17103914#comment-17103914
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Zoltan Haindrich commented on HIVE-23389:
-----------------------------------------
+1
I'm not sure if we want to follow the "Bug" concept - right now I don't think
we have any way to track these kind of things; but if the check would actually
trigger some errors in case the dependency is updated: that might be usefull...
> FilterMergeRule can lead to AssertionError
> ------------------------------------------
>
> Key: HIVE-23389
> URL: https://issues.apache.org/jira/browse/HIVE-23389
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-23389.01.patch, HIVE-23389.01.patch,
> HIVE-23389.02.patch, HIVE-23389.patch
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> I have not been able to reproduce the issue in latest master. However, this
> could potentially happen since Filter creation has a check on whether the
> expression is flat
> ([here|https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/rel/core/Filter.java#L74])
> and Filter merge does not flatten an expression when it is created.
> {noformat}
> java.lang.AssertionError: AND(=($3, 100), OR(OR(null, IS NOT
> NULL(CAST(100):INTEGER)), =(CAST(100):INTEGER, CAST(200):INTEGER)))
> at org.apache.calcite.rel.core.Filter.<init>(Filter.java:74)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveFilter.<init>(HiveFilter.java:39)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.HiveRelFactories$HiveFilterFactoryImpl.createFilter(HiveRelFactories.java:126)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.HiveRelBuilder.filter(HiveRelBuilder.java:99)
> at org.apache.calcite.tools.RelBuilder.filter(RelBuilder.java:1055)
> at
> org.apache.calcite.rel.rules.FilterMergeRule.onMatch(FilterMergeRule.java:81)
> {noformat}
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