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  1. HBase
  2. HBASE-20265

Host regions in other rsgroup when all region servers in a rsgroup are all down

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Critical
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: rsgroup
    • Labels:
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      Description

      We met the following scenario in our production system:
      rsgroup A hosts user table 1 as well as system tables (let's say hbase:rsgroup, or hbase:meta). Several heavy reads on user table 1 make all region servers within rsgroup A crash. As a result, the system tables have no host.
      Under such scenario, we could manually move the system tables to another rsgroup.
      But what about:
      We provide an affinity or last resort. When all region servers in rsgroup A crash, rsgroup B, as rsgroup A's affinity, will take over all tables of rsgroup A, or at least, some important tables.

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            • Assignee:
              Unassigned
              Reporter:
              water Xiang Li
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              • Created:
                Updated: