[jira] [Created] (CALCITE-1593) JoinAssociateRule throws Exception in thread "main" java.lang.AssertionError: Internal error: Error while applying...

["George Theodorakis (JIRA)" <ji...@apache.org>]

George Theodorakis created CALCITE-1593:
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             Summary: JoinAssociateRule throws Exception in thread "main" java.lang.AssertionError: Internal error: Error while applying...
                 Key: CALCITE-1593
                 URL: https://issues.apache.org/jira/browse/CALCITE-1593
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.10.0
            Reporter: George Theodorakis
            Assignee: Julian Hyde
            Priority: Blocker


I have created my own operators and Convention to apply my custom cost logic. I have tried many rules with both Volcano and HepPlanner and everything works fine. When I apply LoptOptimizeRule I get the correct output. However, when I try to use:
	JoinPushThroughJoinRule.LEFT,
	JoinPushThroughJoinRule.RIGHT,
	JoinAssociateRule.INSTANCE,
	JoinCommuteRule.INSTANCE
something goes wrong. I try to apply them in VolcanoPlanner in the same step I use my converter rules to change the initial Logical Operators to the custom ones. 

I declare them as:
	static final RelOptRule SABER_JOIN_PUSH_THROUGH_JOIN_RULE_RIGHT = new JoinPushThroughJoinRule("JoinPushThroughJoinRule", true, SaberJoinRel.class, SaberRelFactories.SABER_LOGICAL_BUILDER);
	
	static final RelOptRule SABER_JOIN_PUSH_THROUGH_JOIN_RULE_LEFT = new JoinPushThroughJoinRule("JoinPushThroughJoinRule", false, SaberJoinRel.class, SaberRelFactories.SABER_LOGICAL_BUILDER);

	static final RelOptRule SABER_JOIN_COMMUTE_RULE = new JoinCommuteRule(SaberJoinRel.class, SaberRelFactories.SABER_LOGICAL_BUILDER, false);
		
So, when I use the four of them I get:

Exception in thread "main" java.lang.AssertionError: Internal error: Error while applying rule SaberProjectRule, args [rel#171:LogicalProject.NONE.[](input=rel#170:Subset#20.LOGICAL.[],rowtime=$8,customerid=$9,phone=$10,rowtime0=$0,orderid=$1,productid=$2,units=$3,customerid0=$4,rowtime00=$5,productid0=$6,description=$7)]
	at org.apache.calcite.util.Util.newInternal(Util.java:792)
	at org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:236)
	at org.apache.calcite.plan.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:819)
	at org.apache.calcite.tools.Programs$RuleSetProgram.run(Programs.java:334)
	at org.apache.calcite.prepare.PlannerImpl.transform(PlannerImpl.java:308)
	at calcite.planner.SaberPlanner.getLogicalPlan(SaberPlanner.java:257)
	at calcite.Tester.main(Tester.java:183)
Caused by: java.lang.AssertionError: Internal error: Error occurred while applying rule SaberProjectRule
	at org.apache.calcite.util.Util.newInternal(Util.java:792)
	at org.apache.calcite.plan.volcano.VolcanoRuleCall.transformTo(VolcanoRuleCall.java:148)
	at org.apache.calcite.plan.RelOptRuleCall.transformTo(RelOptRuleCall.java:225)
	at org.apache.calcite.rel.convert.ConverterRule.onMatch(ConverterRule.java:117)
	at org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:213)
	... 5 more
Caused by: org.apache.calcite.rel.metadata.CyclicMetadataException
	at org.apache.calcite.rel.metadata.CyclicMetadataException.<clinit>(CyclicMetadataException.java:28)
	at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source)
	at org.apache.calcite.rel.metadata.RelMetadataQuery.getRowCount(RelMetadataQuery.java:201)
	at org.apache.calcite.rel.metadata.RelMdRowCount.getRowCount(RelMdRowCount.java:132)
	at GeneratedMetadataHandler_RowCount.getRowCount_$(Unknown Source)
	at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source)
	at org.apache.calcite.rel.metadata.RelMetadataQuery.getRowCount(RelMetadataQuery.java:201)

....

If it helps, when I don't use JoinCommuteRule I don't get an exception, but I get wrong result and when I don't use JoinAssociateRule I get:

Exception in thread "main" java.lang.StackOverflowError
	at com.google.common.collect.ImmutableCollection.<init>(ImmutableCollection.java:157)
	at com.google.common.collect.ImmutableList.<init>(ImmutableList.java:313)
	at com.google.common.collect.SingletonImmutableList.<init>(SingletonImmutableList.java:35)
	at com.google.common.collect.ImmutableList.of(ImmutableList.java:76)
	at org.apache.calcite.rel.SingleRel.getInputs(SingleRel.java:63)
	at org.apache.calcite.plan.volcano.RelSubset$CheapestPlanReplacer.visit(RelSubset.java:461)

Here is a link to the operators I created: https://github.com/giwrgostheod/Calcite-Saber/tree/master/src/main/java/calcite/planner/common



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