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  1. HBase
  2. HBASE-24742

Improve performance of SKIP vs SEEK logic

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    Description

      In our testing of HBase 1.3 against the current tip of branch-1 we saw a 30% slowdown in scanning scenarios.

      We tracked it back to HBASE-17958 and HBASE-19863.
      Both add comparisons to one of the tightest HBase has.

      bharathv

      Attachments

        1. 24742-master.txt
          2 kB
          Lars Hofhansl
        2. hbase-1.6-regression-flame-graph.png
          148 kB
          Bharath Vissapragada
        3. hbase-24742-branch-1.txt
          3 kB
          Lars Hofhansl

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. HBASE-17958 Avoid passing unexpected cell to ScanQueryMatcher when optimize SEEK to SKIP

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. HBASE-19863 java.lang.IllegalStateException: isDelete failed when SingleColumnValueFilter is used

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

          Bug - A problem which impairs or prevents the functions of the product. HBASE-24637 Reseek regression related to filter SKIP hinting

          • Major - Major loss of function.
          • Open
          links to

          Web Link GitHub Pull Request #2075

          Web Link GitHub Pull Request #2081

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            People

              larsh Lars Hofhansl
              larsh Lars Hofhansl
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              Dates

                Created:
                Updated:
                Resolved: