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  1. IMPALA
  2. IMPALA-3138

The column value is kept on hdfs file data after drop column

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    Details

    • Type: Task
    • Status: Resolved
    • Priority: Minor
    • Resolution: Not A Bug
    • Affects Version/s: Impala 2.0
    • Fix Version/s: None
    • Component/s: Catalog
    • Labels:

      Description

      Hi,

      I have a problem when i try to drop column from impala table.

      If I drop column from impala table and i try to select all from table the column is not in the output (it's OK).

      But if i try to add a new column with the same type of old column; the select output shows the new column with old value (of old column) because in hdfs file data the value column is not deleted.

      Is there i way to delete value column from hdfs file data using drop column?

      Thanks.

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            • Assignee:
              Unassigned
              Reporter:
              marley1990 Marco barbieri
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                Updated:
                Resolved: