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Posted to issues@calcite.apache.org by "Jin Xing (Jira)" <ji...@apache.org> on 2019/11/14 15:02:00 UTC
[jira] [Commented] (CALCITE-3505) Infinite matching of
FilterProjectTransposeRule causes stackoverflow
[ https://issues.apache.org/jira/browse/CALCITE-3505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16974336#comment-16974336 ]
Jin Xing commented on CALCITE-3505:
-----------------------------------
From the graphviz.svg attachment, I found input-cycles as below
{code:java}
rel#41:Subset#7.ENUMERABLE.[]
rel#51:EnumerableProject
rel#29:Subset#3.ENUMERABLE.[]
rel#42:EnumerableProject
{code}
> Infinite matching of FilterProjectTransposeRule causes stackoverflow
> --------------------------------------------------------------------
>
> Key: CALCITE-3505
> URL: https://issues.apache.org/jira/browse/CALCITE-3505
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Jin Xing
> Priority: Major
> Attachments: graphviz.svg
>
>
> Run ScannableTableTest#testProjectableFilterableTableJoin with minor change to reproduce
> {code:java}
> @Test public void testProjectableFilterableTableJoin() throws Exception {
> final StringBuilder buf = new StringBuilder();
> final String explain = "PLAN="
> + "EnumerableHashJoin(condition=[=($0, $3)], joinType=[inner])\n"
> + " EnumerableInterpreter\n"
> + " BindableTableScan(table=[[s, b1]], filters=[[=($0, 10)]])\n"
> + " EnumerableInterpreter\n"
> + " BindableTableScan(table=[[s, b2]], filters=[[=($0, 10)]])";
> CalciteAssert.that()
> .with(
> newSchema("s",
> Pair.of("b1", new BeatlesProjectableFilterableTable(buf, true)),
> Pair.of("b2", new BeatlesProjectableFilterableTable(buf, true))))
> .query("select * from \"s\".\"b1\", \"s\".\"b2\" "
> + "where \"s\".\"b1\".\"i\" = 10 and \"s\".\"b2\".\"i\" = 10 "
> + "and \"s\".\"b1\".\"i\" = \"s\".\"b2\".\"i\"")
> .withHook(Hook.PLANNER, (Consumer<RelOptPlanner>) planner -> {
> planner.removeRule(EnumerableRules.ENUMERABLE_MERGE_JOIN_RULE);
> })
> .explainContains(explain);
> }
> {code}
> This test has nothing to do with ENUMERABLE_MERGE_JOIN_RULE, but if we disable it with planner hook, stackoverflow happens;
> I debugged and found that FilterProjectTransposeRule is matched infinitely but not sure the root cause.
>
>
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