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  1. HBase
  2. HBASE-11425 Cell/DBB end-to-end on the read-path
  3. HBASE-16372

References to previous cell in read path should be avoided

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    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: 2.0.0
    • Fix Version/s: 2.0.0
    • Component/s: Scanners
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Came as part of review discussion in HBASE-15554. If there are references kept to previous cells in the read path, with the Ref count based eviction mechanism in trunk, then chances are there to evict a block backing the previous cell but the read path still does some operations on that garbage collected previous cell leading to incorrect results.
      Areas to target
      -> Storescanner
      -> Bloom filters (particularly in compaction path)
      Thanks to Anoop Sam John to point out this in bloomfilter path. But we found it could be in other areas also.

        Attachments

        1. HBASE-16372_testcase.patch
          10 kB
          ramkrishna.s.vasudevan
        2. HBASE-16372_testcase_1.patch
          17 kB
          ramkrishna.s.vasudevan
        3. HBASE-16372_1.patch
          47 kB
          ramkrishna.s.vasudevan
        4. HBASE-16372_2.patch
          47 kB
          ramkrishna.s.vasudevan
        5. HBASE-16372_3.patch
          48 kB
          ramkrishna.s.vasudevan
        6. HBASE-16372_5_withfactory.patch
          69 kB
          ramkrishna.s.vasudevan
        7. HBASE-16372_6_withfactory.patch
          71 kB
          ramkrishna.s.vasudevan
        8. HBASE-16372_7_withfactory.patch
          71 kB
          ramkrishna.s.vasudevan
        9. HBASE-16372_9.patch
          57 kB
          ramkrishna.s.vasudevan
        10. HBASE-16372_10.patch
          56 kB
          ramkrishna.s.vasudevan

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              • Assignee:
                ram_krish ramkrishna.s.vasudevan
                Reporter:
                ram_krish ramkrishna.s.vasudevan
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                Dates

                • Created:
                  Updated:
                  Resolved: