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  1. Apache Drill
  2. DRILL-3183

Query that uses window functions returns NPE

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      Description

      Test was run on 4 node cluster on CentOS. We see NPE for a query that uses window functions. Data was from CSV file (headers were ignored).
      To enable window functions,
      alter session set `window.enable`=true;

      These two queries work

      SELECT count(salary) OVER w, count(salary) OVER w FROM cp.`employee.json` t WINDOW w AS (PARTITION BY store_id ORDER BY position_id DESC);
      
      SELECT count(columns[0]) OVER(PARTITION BY columns[1] ORDER BY columns[0] DESC), count(columns[0]) OVER(PARTITION BY columns[1] ORDER BY columns[0] DESC) FROM `airports.csv`;
      

      These two queries do not work and in the second query we see a NPE

      0: jdbc:drill:schema=dfs.tmp> SELECT count(*) OVER w, count(*) OVER w FROM `airports.csv` WINDOW w AS (PARTITION BY columns[1] ORDER BY columns[0] DESC);
      Error: PARSE ERROR: From line 1, column 87 to line 1, column 93: Table 'columns' not found
      
      
      [Error Id: 51d080bc-580f-44cc-a9be-d29ae60900c3 on centos-03.qa.lab:31010] (state=,code=0)
      

      Query that returns NPE.

      0: jdbc:drill:schema=dfs.tmp> SELECT count(*) OVER w, count(*) OVER w FROM `airports.csv` t WINDOW w AS (PARTITION BY t.columns[1] ORDER BY t.columns[0] DESC);
      Error: PARSE ERROR: java.lang.NullPointerException
      
      
      [Error Id: 27e933bf-1382-4aae-bfef-36444a69acc9 on centos-03.qa.lab:31010] (state=,code=0)
      

      Stack trace from drillbit.log

      2015-05-26 19:07:33,104 [2a9b3b8a-4d0b-ba7b-f0ff-f8038f9f9dbd:foreman] INFO  o.a.drill.exec.work.foreman.Foreman - State change requested.  PENDING --> FAILED
      org.apache.drill.exec.work.foreman.ForemanException: Unexpected exception during fragment initialization: PARSE ERROR: java.lang.NullPointerException
      
      
      [Error Id: 16e17855-32f7-4687-9502-5b4880bb11a4 ]
              at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:251) [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_45]
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_45]
              at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
      Caused by: org.apache.drill.common.exceptions.UserException: PARSE ERROR: java.lang.NullPointerException
      
      
      [Error Id: 16e17855-32f7-4687-9502-5b4880bb11a4 ]
              at org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:522) ~[drill-common-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
              at org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan(DrillSqlWorker.java:180) ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
              at org.apache.drill.exec.work.foreman.Foreman.runSQL(Foreman.java:902) [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
              at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:240) [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
              ... 3 common frames omitted
      Caused by: org.apache.calcite.tools.ValidationException: java.lang.NullPointerException
              at org.apache.calcite.prepare.PlannerImpl.validate(PlannerImpl.java:176) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.prepare.PlannerImpl.validateAndGetType(PlannerImpl.java:185) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.validateNode(DefaultSqlHandler.java:226) ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
              at org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler.getPlan(DefaultSqlHandler.java:178) ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
              at org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan(DrillSqlWorker.java:177) ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
              ... 5 common frames omitted
      Caused by: java.lang.NullPointerException: null
              at org.apache.calcite.rel.type.RelDataTypeImpl.getField(RelDataTypeImpl.java:82) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.SqlValidatorUtil.lookupField(SqlValidatorUtil.java:116) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.prepare.CalciteCatalogReader.field(CalciteCatalogReader.java:205) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.DelegatingScope.fullyQualify(DelegatingScope.java:205) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.SqlValidatorImpl.validateIdentifier(SqlValidatorImpl.java:2580) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.SqlIdentifier.validateExpr(SqlIdentifier.java:251) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.SqlWindow.validate(SqlWindow.java:550) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.SqlNodeList.validate(SqlNodeList.java:147) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.SqlValidatorImpl.validateWindowClause(SqlValidatorImpl.java:3010) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:2957) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:60) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:86) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:874) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:863) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:210) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:837) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:552) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              at org.apache.calcite.prepare.PlannerImpl.validate(PlannerImpl.java:174) ~[calcite-core-1.1.0-drill-r7.jar:1.1.0-drill-r7]
              ... 9 common frames omitted
      
      

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            • Assignee:
              seanhychu Sean Hsuan-Yi Chu
              Reporter:
              khfaraaz Khurram Faraaz
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              • Created:
                Updated:
                Resolved: