[jira] [Created] (TAJO-1796) Count all query for Parquet is crashed

["Jongyoung Park (JIRA)" <ji...@apache.org>]

Jongyoung Park created TAJO-1796:
------------------------------------

             Summary: Count all query for Parquet is crashed
                 Key: TAJO-1796
                 URL: https://issues.apache.org/jira/browse/TAJO-1796
             Project: Tajo
          Issue Type: Bug
          Components: Storage
            Reporter: Jongyoung Park
            Assignee: Jongyoung Park
            Priority: Critical
             Fix For: 0.11.0


When 'select count(*)' is excuted, it fails with following error log:

{quote}
2015-08-21 17:17:31,371 ERROR org.apache.tajo.engine.planner.physical.HashShuffleFileWriteExec: A group type can not be empty. Parquet does not support empty group without leaves. Empty group: table_schema
org.apache.parquet.schema.InvalidSchemaException: A group type can not be empty. Parquet does not support empty group without leaves. Empty group: table_schema
  at org.apache.parquet.schema.GroupType.<init>(GroupType.java:92)
  at org.apache.parquet.schema.GroupType.<init>(GroupType.java:48)
  at org.apache.parquet.schema.MessageType.<init>(MessageType.java:50)
  at org.apache.tajo.storage.parquet.TajoSchemaConverter.convert(TajoSchemaConverter.java:152)
  at org.apache.tajo.storage.parquet.TajoReadSupport.init(TajoReadSupport.java:76)
  at org.apache.parquet.hadoop.InternalParquetRecordReader.initialize(InternalParquetRecordReader.java:172)
  at org.apache.parquet.hadoop.ParquetReader.initReader(ParquetReader.java:152)
  at org.apache.parquet.hadoop.ParquetReader.read(ParquetReader.java:128)
  at org.apache.tajo.storage.parquet.ParquetScanner.next(ParquetScanner.java:73)
...
{quote}



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