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https://issues.apache.org/jira/browse/FLINK-11433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17329517#comment-17329517
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Flink Jira Bot commented on FLINK-11433:
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This issue is assigned but has not received an update in 7 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> JOIN on a table having a column of type MULTISET gives a NPE
> -------------------------------------------------------------
>
> Key: FLINK-11433
> URL: https://issues.apache.org/jira/browse/FLINK-11433
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.7.0, 1.7.1
> Reporter: Elias Saalmann
> Assignee: TANG Wen-hui
> Priority: Minor
> Labels: stale-assigned, stale-minor
>
> I get an error (Error while applying rule FlinkLogicalJoinConverter) when
> performing a JOIN on a table having a column of type MULTISET (e.g. a COLLECT
> as aggregation of a GROUP BY), for instance:
> SELECT a, d
> FROM TableA JOIN (
> SELECT b, COLLECT(c) AS d
> FROM TableB
> GROUP BY b
> ) TableC ON a = b
> Full stacktrace:
> Exception in thread "main" java.lang.RuntimeException: Error while applying
> rule FlinkLogicalJoinConverter, args
> [rel#71:LogicalJoin.NONE(left=rel#69:Subset#3.NONE,right=rel#70:Subset#4.NONE,condition==($2,
> $0),joinType=inner)]
> at
> org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:236)
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:646)
> at
> org.apache.calcite.tools.Programs$RuleSetProgram.run(Programs.java:339)
> at
> org.apache.flink.table.api.TableEnvironment.runVolcanoPlanner(TableEnvironment.scala:373)
> at
> org.apache.flink.table.api.TableEnvironment.optimizeLogicalPlan(TableEnvironment.scala:292)
> at
> org.apache.flink.table.api.BatchTableEnvironment.optimize(BatchTableEnvironment.scala:455)
> at
> org.apache.flink.table.api.BatchTableEnvironment.translate(BatchTableEnvironment.scala:475)
> at
> org.apache.flink.table.api.java.BatchTableEnvironment.toDataSet(BatchTableEnvironment.scala:165)
> at org.myorg.quickstart.TableJob2.main(TableJob2.java:40)
> Caused by: java.lang.RuntimeException: Error occurred while applying rule
> FlinkLogicalJoinConverter
> at
> org.apache.calcite.plan.volcano.VolcanoRuleCall.transformTo(VolcanoRuleCall.java:149)
> at
> org.apache.calcite.plan.RelOptRuleCall.transformTo(RelOptRuleCall.java:234)
> at
> org.apache.calcite.rel.convert.ConverterRule.onMatch(ConverterRule.java:141)
> at
> org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:212)
> ... 8 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.flink.table.plan.nodes.FlinkRelNode$class.estimateDataTypeSize(FlinkRelNode.scala:84)
> at
> org.apache.flink.table.plan.nodes.logical.FlinkLogicalJoinBase.estimateDataTypeSize(FlinkLogicalJoinBase.scala:29)
> at
> org.apache.flink.table.plan.nodes.FlinkRelNode$class.estimateDataTypeSize(FlinkRelNode.scala:104)
> at
> org.apache.flink.table.plan.nodes.logical.FlinkLogicalJoinBase.estimateDataTypeSize(FlinkLogicalJoinBase.scala:29)
> at
> org.apache.flink.table.plan.nodes.FlinkRelNode$$anonfun$estimateRowSize$2.apply(FlinkRelNode.scala:80)
> at
> org.apache.flink.table.plan.nodes.FlinkRelNode$$anonfun$estimateRowSize$2.apply(FlinkRelNode.scala:79)
> at
> scala.collection.IndexedSeqOptimized$class.foldl(IndexedSeqOptimized.scala:57)
> at
> scala.collection.IndexedSeqOptimized$class.foldLeft(IndexedSeqOptimized.scala:66)
> at scala.collection.mutable.ArrayBuffer.foldLeft(ArrayBuffer.scala:48)
> at
> org.apache.flink.table.plan.nodes.FlinkRelNode$class.estimateRowSize(FlinkRelNode.scala:79)
> at
> org.apache.flink.table.plan.nodes.logical.FlinkLogicalJoinBase.estimateRowSize(FlinkLogicalJoinBase.scala:29)
> at
> org.apache.flink.table.plan.nodes.logical.FlinkLogicalJoinBase.computeSelfCost(FlinkLogicalJoinBase.scala:48)
> at
> org.apache.calcite.rel.metadata.RelMdPercentageOriginalRows.getNonCumulativeCost(RelMdPercentageOriginalRows.java:162)
> at
> GeneratedMetadataHandler_NonCumulativeCost.getNonCumulativeCost_$(Unknown
> Source)
> at
> GeneratedMetadataHandler_NonCumulativeCost.getNonCumulativeCost(Unknown
> Source)
> at
> org.apache.calcite.rel.metadata.RelMetadataQuery.getNonCumulativeCost(RelMetadataQuery.java:301)
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.getCost(VolcanoPlanner.java:953)
> at
> org.apache.calcite.plan.volcano.RelSubset.propagateCostImprovements0(RelSubset.java:339)
> at
> org.apache.calcite.plan.volcano.RelSubset.propagateCostImprovements(RelSubset.java:322)
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.addRelToSet(VolcanoPlanner.java:1643)
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.registerImpl(VolcanoPlanner.java:1579)
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.register(VolcanoPlanner.java:859)
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.ensureRegistered(VolcanoPlanner.java:879)
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.ensureRegistered(VolcanoPlanner.java:1755)
> at
> org.apache.calcite.plan.volcano.VolcanoRuleCall.transformTo(VolcanoRuleCall.java:135)
> ... 11 more
> Full example reproducing the error:
> [GitHub|https://github.com/lordon/flink_quickstart/blob/master/src/main/java/org/myorg/quickstart/TableJob2.java]
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