HBase
  1. HBase
  2. HBASE-1676

load balancing on a large cluster doesn't work very well

    Details

    • Type: Bug Bug
    • Status: Resolved
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.20.0
    • Fix Version/s: 0.90.0
    • Component/s: None
    • Labels:
      None

      Description

      I have 200 regions per server in my cluster. When I take one down, then bring it back up, I only end up with about 30 regions assigned to it. This is highly reproducible.

      Furthermore, the assignment algorithm will do silly things like assign all regions of a table to one regionserver - even if it's the best server. We need to be smarter about optimizing how regions are assigned if we want to achieve maximal performance on our clusters.

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            • Assignee:
              Unassigned
              Reporter:
              ryan rawson
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              • Created:
                Updated:
                Resolved:

                Development