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https://issues.apache.org/jira/browse/CALCITE-6647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mihai Budiu updated CALCITE-6647:
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Summary: SortUnionTransposeRule should not push SORT past a UNION when
SORT's fetch is DynamicParam (was: union with params and limit looping)
> SortUnionTransposeRule should not push SORT past a UNION when SORT's fetch is
> DynamicParam
> ------------------------------------------------------------------------------------------
>
> Key: CALCITE-6647
> URL: https://issues.apache.org/jira/browse/CALCITE-6647
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.37.0
> Reporter: Roman Churganov
> Priority: Blocker
> Labels: pull-request-available
>
> A query like
> {code:sql}
> SELECT x.c11 FROM (
> SELECT tt1.c11 FROM (
> SELECT c11 FROM sch1.foo as cp1 LIMIT ?
> ) AS tt1
> UNION ALL
> SELECT tt2.c11 FROM (
> SELECT c11 FROM sch1.foo as cp2 LIMIT ?
> ) AS tt2
> ) AS x LIMIT ?
> {code}
> hangs on building a plan, with debug log, can see a growing plans with a
> nested LogicalSort nodes, eventually it fails with StackOverflow...,
> {noformat}
> .....
> LogicalSort(fetch=[?2])
> LogicalSort(subset=[rel#3740:RelSubset#269.NONE.[]], fetch=[?2])
> LogicalSort(subset=[rel#3670:RelSubset#264.NONE.[]], fetch=[?2])
> LogicalSort(subset=[rel#3600:RelSubset#259.NONE.[]], fetch=[?2])
> LogicalSort(subset=[rel#3530:RelSubset#254.NONE.[]], fetch=[?2])
> LogicalSort(subset=[rel#3460:RelSubset#249.NONE.[]], fetch=[?2])
> LogicalSort(subset=[rel#3390:RelSubset#244.NONE.[]], fetch=[?2])
> LogicalSort(subset=[rel#3320:RelSubset#239.NONE.[]], fetch=[?2])
> LogicalSort(subset=[rel#3250:RelSubset#234.NONE.[]],
> fetch=[?2])
> LogicalSort(subset=[rel#3180:RelSubset#229.NONE.[]],
> fetch=[?2])
> LogicalSort(subset=[rel#3110:RelSubset#224.NONE.[]],
> fetch=[?2])
> LogicalSort(subset=[rel#3040:RelSubset#219.NONE.[]],
> fetch=[?2])
> ...
> {noformat}
> Seem like an issue with `SortUnionTransposeRule `
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