[jira] [Commented] (CALCITE-2205) One more Infinite loop for JoinPushTransitivePredicatesRule

["Vitalii Diravka (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-2205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16387842#comment-16387842 ] 

Vitalii Diravka commented on CALCITE-2205:
------------------------------------------

The work is in progress. My temporary solution is in the branch of my fork-repo: [In progress: CALCITE-2205|https://github.com/vdiravka/calcite/commits/CALCITE-2205]

> One more Infinite loop for JoinPushTransitivePredicatesRule
> -----------------------------------------------------------
>
>                 Key: CALCITE-2205
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2205
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.15.0
>            Reporter: Vitalii Diravka
>            Assignee: Julian Hyde
>            Priority: Major
>             Fix For: 1.16.0
>
>
> CALCITE-2200 resolves some cases of infinite loop via stopping of recursion in HepPlanner#applyRules, when newVertex is the same as vertex.
> In this jira one more case of infinite loop is described:
> JoinPushTransitivePredicatesRule#onMatch generates new right or left inputs via using RelBuilder#filter method on top of LogicalFilter RelNode with the same condition. 
> In this case a new RelNode shouldn't be created. Possible fix to change logic in onMatch method of the rule or the logic of RelBuilder#filter method.
> TestCase for reproduce:
> {code}
>   @Test public void testJoinPushTransitivePredicatesRule2() {
>     HepProgramBuilder builder = new HepProgramBuilder();
>     builder.addRuleInstance(JoinPushTransitivePredicatesRule.INSTANCE);
>     HepProgram build = builder.build();
>     HepPlanner hepPlanner = new HepPlanner(build);
>     final String sql = "select n1.SAL from EMPNULLABLES_20 n1 where n1.SAL\n"
>         + "IN (select n2.SAL from EMPNULLABLES_20 n2 "
>         + "where n1.SAL = n2.SAL or n1.SAL = 4)";
>     sql(sql)
>         .withDecorrelation(true)
>         .with(hepPlanner)
>         .check();
>   }
> {code}



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