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  1. Hive
  2. HIVE-6347

ZeroCopy read path for ORC RecordReader

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • tez-branch
    • tez-branch
    • File Formats
    • None
    • ZeroCopy readers for the ORC file format

    Description

      ORC can use the new HDFS Caching APIs and the ZeroCopy readers to avoid extra data copies into memory while scanning files.

      Implement ORC zcr codepath and a hive.orc.zerocopy flag.

      Attachments

        1. HIVE-6347.1.patch
          26 kB
          Gopal Vijayaraghavan
        2. HIVE-6347.2-tez.patch
          27 kB
          Gopal Vijayaraghavan
        3. HIVE-6347.3-tez.patch
          27 kB
          Gopal Vijayaraghavan
        4. HIVE-6347.4-tez.patch
          26 kB
          Gopal Vijayaraghavan
        5. HIVE-6347.5-tez.patch
          24 kB
          Gopal Vijayaraghavan

        Issue Links

          blocks

          Bug - A problem which impairs or prevents the functions of the product. HIVE-6382 PATCHED_BLOB encoding in ORC will corrupt data in some cases

          • Major - Major loss of function.
          • Resolved
          is blocked by

          Bug - A problem which impairs or prevents the functions of the product. HIVE-6346 Add Hadoop-2.4.0 shims to hive-tez

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          New Feature - A new feature of the product, which has yet to be developed. HADOOP-10047 Add a directbuffer Decompressor API to hadoop

          • Major - Major loss of function.
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. HIVE-6360 Hadoop 2.3 + Tez 0.3

          • Major - Major loss of function.
          • Resolved

          New Feature - A new feature of the product, which has yet to be developed. HDFS-4949 Centralized cache management in HDFS

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-5957 Provide support for different mmap cache retention policies in ShortCircuitCache.

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              gopalv Gopal Vijayaraghavan
              gopalv Gopal Vijayaraghavan
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              Dates

                Created:
                Updated:
                Resolved: