Hive
  1. Hive
  2. HIVE-819

Add lazy decompress ability to RCFile

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    • Hadoop Flags:
      Reviewed

      Description

      This is especially useful for a filter scanning.
      For example, for query 'select a, b, c from table_rc_lazydecompress where a>1;' we only need to decompress the block data of b,c columns when one row's column 'a' in that block satisfies the filter condition.

      1. hive-819-2009-11-1.patch
        20 kB
        He Yongqiang
      2. hive-819-2009-9-21.patch
        17 kB
        He Yongqiang
      3. hive-819-2009-9-12.patch
        14 kB
        He Yongqiang

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          • Assignee:
            He Yongqiang
            Reporter:
            He Yongqiang
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