Details

    • Type: Improvement Improvement
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.89.20100621
    • Fix Version/s: 0.90.0
    • Component/s: regionserver
    • Labels:
      None

      Description

      I'd like to brainstorm some ideas on how we can prioritize reads and writes to META above reads and writes to other tables. I've noticed that if the regionserver hosting META is under heavy load, then lots of other operations take much longer than they should. For example, I'm currently running 120 threads of YCSB across 3 client nodes hitting a 5-node cluster. Doing a full scan of META (only 600 rows) takes upwards of 30 seconds in the shell, since all of the handler threads are tied up and there's a long RPC queue.

      1. HBASE-2782.txt
        22 kB
        ryan rawson

        Issue Links

          Activity

          ryan rawson made changes -
          Status Patch Available [ 10002 ] Resolved [ 5 ]
          Resolution Fixed [ 1 ]
          Todd Lipcon made changes -
          Link This issue is related to HADOOP-6952 [ HADOOP-6952 ]
          ryan rawson made changes -
          Status Open [ 1 ] Patch Available [ 10002 ]
          Affects Version/s 0.89.20100621 [ 12315193 ]
          Fix Version/s 0.90.0 [ 12313607 ]
          ryan rawson made changes -
          Attachment HBASE-2782.txt [ 12454590 ]
          ryan rawson made changes -
          Assignee ryan rawson [ ryanobjc ]
          Todd Lipcon made changes -
          Link This issue is related to HBASE-2981 [ HBASE-2981 ]
          Todd Lipcon made changes -
          Link This issue is related to HBASE-2964 [ HBASE-2964 ]
          Jeff Hammerbacher made changes -
          Field Original Value New Value
          Link This issue is related to HDFS-599 [ HDFS-599 ]
          Todd Lipcon created issue -

            People

            • Assignee:
              ryan rawson
              Reporter:
              Todd Lipcon
            • Votes:
              0 Vote for this issue
              Watchers:
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              Dates

              • Created:
                Updated:
                Resolved:

                Development