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  1. Cassandra
  2. CASSANDRA-1470

Avoid polluting page cache during compaction

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Normal
    • Resolution: Fixed
    • Fix Version/s: 0.7.1
    • Component/s: None
    • Labels:
      None

      Description

      When compaction scans through a group of sstables, it forces the data in the os buffer cache being used for hot reads, which can have a dramatic negative effect on performance.

        Attachments

        1. 1470.txt
          30 kB
          Jonathan Ellis
        2. 1470-v2.txt
          23 kB
          Jonathan Ellis
        3. use.DirectIORandomAccessFile.for.commitlog.against.1022235.patch
          1.0 kB
          Robert Coli
        4. CASSANDRA-1470.patch
          7 kB
          Pavel Yaskevich
        5. CASSANDRA-1470-v2.patch
          8 kB
          Pavel Yaskevich
        6. CASSANDRA-1470-v3-0.7-with-LastErrorException-support.patch
          8 kB
          Pavel Yaskevich
        7. CASSANDRA-1470-for-0.6.patch
          7 kB
          Pavel Yaskevich
        8. CASSANDRA-1470-v4-for-0.7.patch
          17 kB
          Pavel Yaskevich
        9. CASSANDRA-1470-v5-for-0.7.patch
          30 kB
          Pavel Yaskevich
        10. CASSANDRA-1470-v6-for-0.7.patch
          31 kB
          Pavel Yaskevich
        11. CASSANDRA-1470-v7-for-0.7.patch
          32 kB
          T Jake Luciani
        12. CASSANDRA-1470-v8-for-0.7.patch
          33 kB
          Pavel Yaskevich
        13. CASSANDRA-1470-v9-for-0.7.patch
          33 kB
          Pavel Yaskevich
        14. CASSANDRA-1470-v10-for-0.7.patch
          37 kB
          T Jake Luciani
        15. CASSANDRA-1470-v11-for-0.7.patch
          38 kB
          T Jake Luciani
        16. CASSANDRA-1470-v12-0.7.patch
          36 kB
          Pavel Yaskevich
        17. CASSANDRA-1470-v13-0.7.patch
          36 kB
          Pavel Yaskevich
        18. CASSANDRA-1470-v14-0.7.patch
          34 kB
          T Jake Luciani

        Issue Links

        is related to

        Improvement - An improvement or enhancement to an existing feature or task. CASSANDRA-1908 Implement the CLibrary using JNI module to avoid the LGPL dependency on JNA

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            People

            • Assignee:
              xedin Pavel Yaskevich Assign to me
              Reporter:
              jbellis Jonathan Ellis
              Authors:
              Pavel Yaskevich
              Reviewers:
              T Jake Luciani

              Dates

              • Created:
                Updated:
                Resolved:

                Time Tracking

                Estimated:
                Original Estimate - 80h
                80h
                Remaining:
                Remaining Estimate - 80h
                80h
                Logged:
                Time Spent - Not Specified
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