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Posted to issues@ignite.apache.org by "Aleksey Plekhanov (Jira)" <ji...@apache.org> on 2021/11/24 10:58:00 UTC
[jira] [Assigned] (IGNITE-15980) Calcite engine. Flaky test SetOpPlannerTest.testSetOpRandom[SetOp = INTERSECT]
[ https://issues.apache.org/jira/browse/IGNITE-15980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aleksey Plekhanov reassigned IGNITE-15980:
------------------------------------------
Assignee: Aleksey Plekhanov
> Calcite engine. Flaky test SetOpPlannerTest.testSetOpRandom[SetOp = INTERSECT]
> ------------------------------------------------------------------------------
>
> Key: IGNITE-15980
> URL: https://issues.apache.org/jira/browse/IGNITE-15980
> Project: Ignite
> Issue Type: Bug
> Reporter: Aleksey Plekhanov
> Assignee: Aleksey Plekhanov
> Priority: Major
> Labels: calcite2-required, calcite3-required
>
> After Calcite version update test {{SetOpPlannerTest.testSetOpRandom[SetOp = INTERSECT]}} become flaky:
> {noformat}
> java.lang.AssertionError: Invalid plan (Unexpected node class [node=rel#2245:IgniteSingleIntersect.IGNITE.[].single.one-way.uncorrelated(input#0=IgniteExchange#2243,input#1=IgniteExchange#2244,all=true), cls=IgniteReduceIntersect]):
> IgniteSingleIntersect(all=[true]): rowcount = 200.0, cumulative cost = IgniteCost [rowCount=600.0, cpu=600.0, memory=2000.0, io=0.0, network=2400.0], id = 2245
> IgniteExchange(distribution=[single]): rowcount = 100.0, cumulative cost = IgniteCost [rowCount=200.0, cpu=200.0, memory=0.0, io=0.0, network=1200.0], id = 2243
> IgniteTableScan(table=[[PUBLIC, RANDOM_TBL1]], requiredColumns=[{0, 1, 2}]): rowcount = 100.0, cumulative cost = IgniteCost [rowCount=100.0, cpu=100.0, memory=0.0, io=0.0, network=0.0], id = 2210
> IgniteExchange(distribution=[single]): rowcount = 100.0, cumulative cost = IgniteCost [rowCount=200.0, cpu=200.0, memory=0.0, io=0.0, network=1200.0], id = 2244
> IgniteTableScan(table=[[PUBLIC, RANDOM_TBL2]], requiredColumns=[{0, 1, 2}]): rowcount = 100.0, cumulative cost = IgniteCost [rowCount=100.0, cpu=100.0, memory=0.0, io=0.0, network=0.0], id = 2213
> {noformat}
> The root cause: There are two methods {{getRowCount}} in {{IgniteMdRowCount}} which fits {{IgniteMapIntersect}} relational operator as parameter (one accepting {{IgniteSetOp}}, and another from super class accepting {{Intersect}}). Runtime code-generator choose random of these methods. In last Calcite version row count calculation algorithm of method {{getRowCount(Intersect)}} was changed, and if this method is choosen by runtime code generator, there is incorrect cost and planner builds incorrect plan. In debug mode always correct method ({{getRowCount(IgniteSetOp)}}) is choosen.
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