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  1. HBase
  2. HBASE-3679

Provide cost information associated with moving region(s)

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Implemented
    • None
    • None
    • None
    • None

    Description

      In order for load balancer to make better decision, we need to establish cost model for moving region(s).
      One factor would be the number of active scanners on a particular region.
      This count is easy to maintain at HRegion level. instantiateInternalScanner() can increment the counter and RegionScanner.close() would decrement the count.

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          is blocked by

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-3811 Allow adding attributes to Scan

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

          Umbrella - An overarching type made of sub-tasks HBASE-3724 Load balancer improvements

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

          Bug - A problem which impairs or prevents the functions of the product. HBASE-3943 Propagate compaction status from HRegion to HServerLoad.RegionLoad

          • Major - Major loss of function.
          • Closed

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              Unassigned Unassigned
              yuzhihong@gmail.com Ted Yu
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                Created:
                Updated:
                Resolved: