I think ProjectMergeRule related cyclic triggering has been walked around by CALCITE-3774 [1].
Haisheng [1] https://issues.apache.org/jira/browse/CALCITE-3774 On 2020/04/21 21:20:35, Stamatis Zampetakis <zabe...@gmail.com> wrote: > I've seen it also quite a few times and most often the reason was cycles in > the subsets that were triggering some rules (e.g., ProjectMergeRule [1]) to > fire an infinite number of times [2, 3, 4]. > > Best, > Stamatis > > [1] > https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/rel/rules/ProjectMergeRule.java > [2] https://issues.apache.org/jira/browse/CALCITE-3505 > [3] https://issues.apache.org/jira/browse/CALCITE-2223 > [4] https://issues.apache.org/jira/browse/CALCITE-3124 > > On Tue, Apr 21, 2020 at 6:43 AM Haisheng Yuan <hy...@apache.org> wrote: > > > Can you add a reproducible test case and log a JIRA? It may be different > > with CALCITE-2057. People who is interested will investigate the issue. > > > > On 2020/04/21 04:24:31, JiaTao Tao <taojia...@gmail.com> wrote: > > > Thanks > > > I didn't add any new rule, just these: > > > > > > CONSTANT_REDUCTION_RULES > > > ABSTRACT_RELATIONAL_RULES > > > BASE_RULES > > > ABSTRACT_RULES > > > ENUMERABLE_RULES > > > > > > So this is a bug, or it just because of the call stack is too deep(if > > this, > > > I can adjust JVM parameter). > > > > > > Regards! > > > > > > Aron Tao > > > > > > > > > Scott Reynolds <sdrreyno...@gmail.com> 于2020年4月21日周二 上午1:10写道： > > > > > > > I have had this happen numerous times when writing new planner rules. > > Most > > > > of the time my rule is missing some boolean logic to prevent itself > > from > > > > transforming the call. This results in the rule continuously > > transforming > > > > it's previous transformations. > > > > > > > > I can usually see this happening when I add a > > > > System.out.println(RelOptUtil.dumpPlan()) to the line before the > > > > call.transformTo(newRelationNode) > > > > > > > > On Mon, Apr 20, 2020 at 3:13 AM JiaTao Tao <taojia...@gmail.com> > > wrote: > > > > > > > > > Hi > > > > > Has anyone encountered this problem before? Just a simple query(no > > more > > > > > than 20 lines, two joins, no union). > > > > > > > > > > And I see this ticket: > > > > https://issues.apache.org/jira/browse/CALCITE-2057, > > > > > but there's no follow up, also I see flink may occur this problem( > > > > > https://developer.aliyun.com/ask/129548) > > > > > > > > > > java.lang.StackOverflowError > > > > > at java.util.HashMap.hash(HashMap.java:339) > > > > > at java.util.HashMap.put(HashMap.java:612) > > > > > at > > > > > > > > > > > com.google.common.collect.StandardTable.getOrCreate(StandardTable.java:165) > > > > > at > > > > com.google.common.collect.StandardTable.put(StandardTable.java:174) > > > > > at > > > > com.google.common.collect.HashBasedTable.put(HashBasedTable.java:55) > > > > > at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source) > > > > > at > > > > > > > > > > > org.apache.calcite.rel.metadata.RelMetadataQuery.getRowCount(RelMetadataQuery.java:208) > > > > > at > > > > > > > > > > > org.apache.calcite.rel.metadata.RelMdRowCount.getRowCount(RelMdRowCount.java:72) > > > > > at GeneratedMetadataHandler_RowCount.getRowCount_$(Unknown > > Source) > > > > > at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source) > > > > > at ... > > > > > > > > > > Regards! > > > > > > > > > > Aron Tao > > > > > > > > > > > > > > >
