Uploaded image for project: 'HBase'
  1. HBase
  2. HBASE-4583

Integrate RWCC with Append and Increment operations

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.95.0
    • None
    • None
    • Reviewed
    • Hide
      This issue fixes MVCC issues with Increment and Append. To retain the current performance characteristics, VERSIONS should be set to 1 on column families with columns to be incremented/appended-to.
      If VERSIONS is > 1 historical versions are kept for timerange queries, but Increment/Appends will be slower due to changes accumulating the memstore leading to frequent flushes.
      Show
      This issue fixes MVCC issues with Increment and Append. To retain the current performance characteristics, VERSIONS should be set to 1 on column families with columns to be incremented/appended-to. If VERSIONS is > 1 historical versions are kept for timerange queries, but Increment/Appends will be slower due to changes accumulating the memstore leading to frequent flushes.

    Description

      Currently Increment and Append operations do not work with RWCC and hence a client could see the results of multiple such operation mixed in the same Get/Scan.
      The semantics might be a bit more interesting here as upsert adds and removes to and from the memstore.

      Attachments

        1. 4584-0.94-v1.txt
          23 kB
          Varun Sharma
        2. 4583-v4.txt
          24 kB
          Lars Hofhansl
        3. 4583-v3.txt
          24 kB
          Lars Hofhansl
        4. 4583-v2.txt
          15 kB
          Lars Hofhansl
        5. 4583-trunk-v3.txt
          27 kB
          Lars Hofhansl
        6. 4583-trunk-radical.txt
          21 kB
          Lars Hofhansl
        7. 4583-trunk-radical_v2.txt
          24 kB
          Lars Hofhansl
        8. 4583-trunk-less-radical-v6.txt
          18 kB
          Lars Hofhansl
        9. 4583-trunk-less-radical-v5.txt
          29 kB
          Lars Hofhansl
        10. 4583-trunk-less-radical-v4.txt
          29 kB
          Lars Hofhansl
        11. 4583-trunk-less-radical-v3.txt
          15 kB
          Lars Hofhansl
        12. 4583-trunk-less-radical-v2.txt
          14 kB
          Lars Hofhansl
        13. 4583-trunk-less-radical.txt
          12 kB
          Lars Hofhansl
        14. 4583-mixed-v4.txt
          19 kB
          Lars Hofhansl
        15. 4583-mixed-v2.txt
          19 kB
          Lars Hofhansl
        16. 4583-mixed.txt
          18 kB
          Lars Hofhansl
        17. 4583.txt
          15 kB
          Lars Hofhansl

        Issue Links

          is depended upon by

          Bug - A problem which impairs or prevents the functions of the product. HBASE-7141 Cleanup Increment and Append issues

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

          Bug - A problem which impairs or prevents the functions of the product. HBASE-7051 CheckAndPut should properly read MVCC

          • Major - Major loss of function.
          • Closed
          relates to

          Sub-task - The sub-task of the issue HBASE-7076 Add test that increment/append properly integrate with MVCC

          • Major - Major loss of function.
          • Closed

          Sub-task - The sub-task of the issue HBASE-7078 Add a test that append is atomic

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. HBASE-12931 The existing KeyValues in memstore are not removed completely after inserting cell into memStore

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

          Activity

            People

              larsh Lars Hofhansl
              larsh Lars Hofhansl
              Votes:
              0 Vote for this issue
              Watchers:
              16 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: