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  1. HBase
  2. HBASE-4274

RS should periodically ping its HLog pipeline even if no writes are arriving

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: 0.92.0
    • Fix Version/s: None
    • Component/s: regionserver, wal
    • Labels:
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      Description

      If you restart HDFS underneath HBase, when HBase isn't taking any write load, the region servers won't "notice" that there's any problem until the next time they take a write, at which point they will abort (because the pipeline is gone from beneath them). It would be better if they wrote some garbage to their HLog once every few seconds as a sort of keepalive, so they will aggressively abort as soon as there's an issue.

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              • Assignee:
                tlipcon Todd Lipcon
                Reporter:
                tlipcon Todd Lipcon
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                • Created:
                  Updated:
                  Resolved: