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  1. IMPALA
  2. IMPALA-656

Column Comments Not Visible in DESCRIBE TABLE output for Parquet Table

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • Impala 1.1.1
    • Impala 1.2
    • None

    Description

      Column comments on Parquet tables are not shown in the output of DESCRIBE TABLE. Instead, the comment is shown simply as "from deserializer":

      [example.com:21000] > create table foo (id int comment 'some.id') STORED AS PARQUETFILE;
      Query: create table foo (id int comment 'some.id')  STORED AS PARQUETFILE
      [example.com:21000] > describe foo;
      Query: describe foo
      Query finished, fetching results ...
      +------+------+-------------------+
      | name | type | comment           |
      +------+------+-------------------+
      | id   | int  | from deserializer |
      +------+------+-------------------+
      Returned 1 row(s) in 0.07s
      

      The comment should of course be shown as "some.id", not "from deserializer".

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            lskuff Lenni Kuff
            theory_impala_af54 David E. Wheeler
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              Created:
              Updated:
              Resolved: