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  1. IMPALA
  2. IMPALA-4922

Error msg for bogus Kudu ENCODING attribute refers to nonexistent attribute values

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    Details

    • Type: Improvement
    • Status: Reopened
    • Priority: Trivial
    • Resolution: Unresolved
    • Affects Version/s: Impala 2.8.0
    • Fix Version/s: None
    • Component/s: Frontend
    • Labels:

      Description

      If you attempt to create a Kudu table with a bogus value for the ENCODING attribute, the error message gives a list of attribute values that are supposed to be recognized:

      create table xyz (x int primary key encoding foo) stored as kudu;
      ERROR: AnalysisException: Unsupported encoding value 'FOO'. Supported encoding values are: UNKNOWN, AUTO_ENCODING, PLAIN_ENCODING, PREFIX_ENCODING, GROUP_VARINT, RLE, DICT_ENCODING, BIT_SHUFFLE
      

      However, several of these suggested values are not recognized or otherwise don't work:

      create table xyz (x int primary key encoding unknown) partition by hash (x) partitions 2 stored as kudu;
      ERROR: IllegalStateException: Error parsing encoding/compression values for Kudu column 'x': Unsupported encoding: UNKNOWN
      
      create table xyz (x int primary key encoding group_varint) partition by hash (x) partitions 2 stored as kudu;
      ERROR: 
      ImpalaRuntimeException: Error creating Kudu table 'impala::jrussell.xyz'
      CAUSED BY: NonRecoverableException: invalid encoding for column 'x': encoding GROUP_VARINT not supported for type INT32
      

      The spec of GROUP_VARINT in Kudu sounds like it should apply to all sizes of integers. I tried TINYINT, SMALLINT, INT, and BIGINT but Impala didn't recognize GROUP_VARINT encoding for any of those types.

      Let's make the error message only refer to choices that are actually available.

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            • Assignee:
              Unassigned
              Reporter:
              jrussell John Russell
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              • Created:
                Updated: