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From "Boaz Ben-Zvi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-6487) Negative row count when selecting from a json file with an OFFSET clause
Date Mon, 11 Jun 2018 22:08:00 GMT
Boaz Ben-Zvi created DRILL-6487:
-----------------------------------

             Summary: Negative row count when selecting from a json file with an OFFSET clause
                 Key: DRILL-6487
                 URL: https://issues.apache.org/jira/browse/DRILL-6487
             Project: Apache Drill
          Issue Type: Bug
          Components: Query Planning &amp; Optimization
    Affects Versions: 1.13.0
            Reporter: Boaz Ben-Zvi
             Fix For: 1.14.0


This simple query fails: 

{code}
select * from dfs.`/data/foo.json` offset 1 row;
{code}

where foo.json is 
{code}
{"key": "aa", "sales": 11}
{"key": "bb", "sales": 22}
{code}

The error returned is:
{code}
0: jdbc:drill:zk=local> select * from dfs.`/data/foo.json` offset 1 row;
Error: SYSTEM ERROR: AssertionError


[Error Id: 960d66a9-b480-4a7e-9a25-beb4928e8139 on 10.254.130.25:31020]

  (org.apache.drill.exec.work.foreman.ForemanException) Unexpected exception during fragment
initialization: null
    org.apache.drill.exec.work.foreman.Foreman.run():282
    java.util.concurrent.ThreadPoolExecutor.runWorker():1142
    java.util.concurrent.ThreadPoolExecutor$Worker.run():617
    java.lang.Thread.run():745
  Caused By (java.lang.AssertionError) null
    org.apache.calcite.rel.metadata.RelMetadataQuery.isNonNegative():900
    org.apache.calcite.rel.metadata.RelMetadataQuery.validateResult():919
    org.apache.calcite.rel.metadata.RelMetadataQuery.getRowCount():236
    org.apache.calcite.rel.SingleRel.estimateRowCount():68
    org.apache.drill.exec.planner.physical.visitor.ExcessiveExchangeIdentifier$MajorFragmentStat.add():103
    org.apache.drill.exec.planner.physical.visitor.ExcessiveExchangeIdentifier.visitPrel():76
    org.apache.drill.exec.planner.physical.visitor.ExcessiveExchangeIdentifier.visitPrel():32
    org.apache.drill.exec.planner.physical.visitor.BasePrelVisitor.visitProject():50
    org.apache.drill.exec.planner.physical.ProjectPrel.accept():98
    org.apache.drill.exec.planner.physical.visitor.ExcessiveExchangeIdentifier.visitScreen():63
    org.apache.drill.exec.planner.physical.visitor.ExcessiveExchangeIdentifier.visitScreen():32
    org.apache.drill.exec.planner.physical.ScreenPrel.accept():65
    org.apache.drill.exec.planner.physical.visitor.ExcessiveExchangeIdentifier.removeExcessiveEchanges():41
    org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.convertToPrel():557
    org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.getPlan():179
    org.apache.drill.exec.planner.sql.DrillSqlWorker.getQueryPlan():145
    org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan():83
    org.apache.drill.exec.work.foreman.Foreman.runSQL():567
    org.apache.drill.exec.work.foreman.Foreman.run():264
    java.util.concurrent.ThreadPoolExecutor.runWorker():1142
    java.util.concurrent.ThreadPoolExecutor$Worker.run():617
    java.lang.Thread.run():745 (state=,code=0)
{code}





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