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  1. Apache Drill
  2. DRILL-6181

CTAS should support writing nested structures (nested lists) to parquet.

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.12.0
    • Fix Version/s: 1.17.0
    • Component/s: Storage - Parquet
    • Labels:
      None

      Description

      Both Parquet and Hive support writing nested structures into parquet

      https://issues.apache.org/jira/browse/HIVE-8909
      https://issues.apache.org/jira/browse/PARQUET-113

      A CTAS from Drill fails when there is a nested list of lists, in one of the columns in the project.

      JSON data used in the test, note that "arr" is a nested list of lists

       
      [root@qa102-45 ~]# cat jsonToParquet_02.json
      {"id":"123","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      {"id":"3","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      {"id":"13","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      {"id":"12","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      {"id":"2","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      {"id":"1","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      {"id":"230","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      {"id":"1230","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      {"id":"1123","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      {"id":"2123","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      {"id":"1523","arr":[[1,2,3,4],[5,6,7,8,9,10],[11,12,13,14,15]]}
      [root@qa102-45 ~]#
      

      CTAS fails with UnsupportedOperationException on Drill 1.12.0-mapr commit id bb07ebbb9ba8742f44689f8bd8efb5853c5edea0

       0: jdbc:drill:schema=dfs.tmp> CREATE TABLE tbl_prq_from_json_02 as select id, arr from `jsonToParquet_02.json`;
      Error: SYSTEM ERROR: UnsupportedOperationException: Unsupported type LIST
      
      Fragment 0:0
      
      [Error Id: 7e5b3c2d-9cf1-4e87-96c8-e7e7e8055ddf on qa102-45.qa.lab:31010] (state=,code=0)
      

      Stack trace from drillbit.log

      2018-02-22 09:56:54,368 [2570fb99-62da-a516-2c1f-0381e21723ae:frag:0:0] ERROR o.a.d.e.w.fragment.FragmentExecutor - SYSTEM ERROR: UnsupportedOperationException: Unsupported type LIST
      
      Fragment 0:0
      
      [Error Id: 7e5b3c2d-9cf1-4e87-96c8-e7e7e8055ddf on qa102-45.qa.lab:31010]
      org.apache.drill.common.exceptions.UserException: SYSTEM ERROR: UnsupportedOperationException: Unsupported type LIST
      
      Fragment 0:0
      
      [Error Id: 7e5b3c2d-9cf1-4e87-96c8-e7e7e8055ddf on qa102-45.qa.lab:31010]
       at org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:586) ~[drill-common-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.work.fragment.FragmentExecutor.sendFinalState(FragmentExecutor.java:301) [drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.work.fragment.FragmentExecutor.cleanup(FragmentExecutor.java:160) [drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:267) [drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38) [drill-common-1.12.0-mapr.jar:1.12.0-mapr]
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_161]
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_161]
       at java.lang.Thread.run(Thread.java:748) [na:1.8.0_161]
      Caused by: java.lang.UnsupportedOperationException: Unsupported type LIST
       at org.apache.drill.exec.store.parquet.ParquetRecordWriter.getType(ParquetRecordWriter.java:253) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.store.parquet.ParquetRecordWriter.newSchema(ParquetRecordWriter.java:205) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.store.parquet.ParquetRecordWriter.updateSchema(ParquetRecordWriter.java:190) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.physical.impl.WriterRecordBatch.setupNewSchema(WriterRecordBatch.java:157) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.physical.impl.WriterRecordBatch.innerNext(WriterRecordBatch.java:103) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:164) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:119) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:109) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:134) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:164) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:105) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:79) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:95) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:234) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:227) ~[drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_161]
       at javax.security.auth.Subject.doAs(Subject.java:422) ~[na:1.8.0_161]
       at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1595) ~[hadoop-common-2.7.0-mapr-1707.jar:na]
       at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:227) [drill-java-exec-1.12.0-mapr.jar:1.12.0-mapr]
       ... 4 common frames omitted
      

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              • Assignee:
                Unassigned
                Reporter:
                khfaraaz Khurram Faraaz
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                • Created:
                  Updated:
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