[DRILL-5245] Using filter and offset could lead to an assertion error in Calcite

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.10.0
• Component/s: Query Planning & Optimization
• Assignee: Unassigned
• Reporter: Rahul Kumar Challapalli
• Created: 08/Feb/17 21:12
• Updated: 08/Feb/17 22:10

Description

git.commit.id.abbrev=2af709f

Based on the filter selectivity, the planner might think that the number of records from upstream in lesser than the "OFFSET" value and can fail with an assertion error. Though in reality the estimate based on filter selectivity could be wrong

Below is one such example where I am hitting this issue

select * from (
  select * from (
    select d.*, concat(d.c_first_name, d.c_last_name) as name from (
      SELECT 
            *
      FROM   catalog_sales,
           customer
      WHERE  cs_bill_customer_sk = c_customer_sk
    ) as d 
    order by d.c_email_address nulls first 
  ) as d1 
  where d1.name is not null
) d2
OFFSET 1434510;

Exception from the logs

2017-02-08 11:42:39,925 [27648b4f-98e5-22a9-f7d7-eccb587854a6:foreman] ERROR o.a.drill.exec.work.foreman.Foreman - SYSTEM ERROR: AssertionError


[Error Id: d026ab7f-9e11-4854-b39c-66a7846b6a3a on qa-node190.qa.lab:31010]
org.apache.drill.common.exceptions.UserException: SYSTEM ERROR: AssertionError


[Error Id: d026ab7f-9e11-4854-b39c-66a7846b6a3a on qa-node190.qa.lab:31010]
        at org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:544) ~[drill-common-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.work.foreman.Foreman$ForemanResult.close(Foreman.java:825) [drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.work.foreman.Foreman.moveToState(Foreman.java:945) [drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:281) [drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_111]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_111]
        at java.lang.Thread.run(Thread.java:745) [na:1.7.0_111]
Caused by: org.apache.drill.exec.work.foreman.ForemanException: Unexpected exception during fragment initialization: null
        ... 4 common frames omitted
Caused by: java.lang.AssertionError: null
        at org.apache.calcite.rel.metadata.RelMetadataQuery.isNonNegative(RelMetadataQuery.java:524) ~[calcite-core-1.4.0-drill-r19.jar:1.4.0-drill-r19]
        at org.apache.calcite.rel.metadata.RelMetadataQuery.validateResult(RelMetadataQuery.java:543) ~[calcite-core-1.4.0-drill-r19.jar:1.4.0-drill-r19]
        at org.apache.calcite.rel.metadata.RelMetadataQuery.getRowCount(RelMetadataQuery.java:87) ~[calcite-core-1.4.0-drill-r19.jar:1.4.0-drill-r19]
        at org.apache.calcite.rel.externalize.RelWriterImpl.explain_(RelWriterImpl.java:103) ~[calcite-core-1.4.0-drill-r19.jar:1.4.0-drill-r19]
        at org.apache.calcite.rel.externalize.RelWriterImpl.done(RelWriterImpl.java:160) ~[calcite-core-1.4.0-drill-r19.jar:1.4.0-drill-r19]
        at org.apache.calcite.rel.AbstractRelNode.explain(AbstractRelNode.java:283) ~[calcite-core-1.4.0-drill-r19.jar:1.4.0-drill-r19]
        at org.apache.calcite.plan.RelOptUtil.toString(RelOptUtil.java:1927) ~[calcite-core-1.4.0-drill-r19.jar:1.4.0-drill-r19]
        at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.log(DefaultSqlHandler.java:138) ~[drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.log(DefaultSqlHandler.java:132) ~[drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.transform(DefaultSqlHandler.java:411) ~[drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.transform(DefaultSqlHandler.java:343) ~[drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToDrel(DefaultSqlHandler.java:240) ~[drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToDrel(DefaultSqlHandler.java:290) ~[drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.getPlan(DefaultSqlHandler.java:168) ~[drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.planner.sql.DrillSqlWorker.getPhysicalPlan(DrillSqlWorker.java:117) ~[drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan(DrillSqlWorker.java:91) ~[drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.work.foreman.Foreman.runSQL(Foreman.java:1018) [drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:264) [drill-java-exec-1.10.0-SNAPSHOT.jar:1.10.0-SNAPSHOT]
        ... 3 common frames omitted