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

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

     [ https://issues.apache.org/jira/browse/TAJO-1796?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jongyoung Park updated TAJO-1796:
---------------------------------
    Attachment: TAJO-1796.patch

> 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
>    Affects Versions: 0.10.1
>            Reporter: Jongyoung Park
>            Assignee: Jongyoung Park
>            Priority: Critical
>             Fix For: 0.11.0
>
>         Attachments: TAJO-1796.patch
>
>
> 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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