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  1. Hive
  2. HIVE-23038

Suspect Direct SQL Statement Regarding BitVector

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 4.0.0, 3.1.2
    • Fix Version/s: None
    • Component/s: Standalone Metastore, Statistics
    • Labels:
      None

      Description

      https://github.com/apache/hive/blob/26cc3154c061d2194fba1c3bb156bb7e06e4a6c5/standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/MetaStoreDirectSql.java#L1249

      The list of things that gets SELECT-ed from the backend database depends on a flag:

          final String queryText0 = "select " + getStatsList(enableBitVector) + " from " + TAB_COL_STATS
          + " where \"CAT_NAME\" = ? and \"DB_NAME\" = ? and \"TABLE_NAME\" = ? "
          + " and \"ENGINE\" = ? and \"COLUMN_NAME\" in (";

      However, the same flag is not passed to the Java Marshaling code, so I sincerely doubt that it is being parsed correctly. How can it know what the number of columns are?

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            • Assignee:
              Unassigned
              Reporter:
              belugabehr David Mollitor
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              Dates

              • Created:
                Updated: