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  1. HBase
  2. HBASE-10424

HMaster could capture stacks of RSes it deems unresponsive during assignments

    Details

    • Type: Wish
    • Status: Resolved
    • Priority: Trivial
    • Resolution: Won't Fix
    • Affects Version/s: 0.96.0
    • Fix Version/s: None
    • Component/s: Region Assignment
    • Labels:
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      Description

      Often there are cases of a region not getting assigned due to timeouts (while others do go through). In this case, the Master does appear to enter a never-ending retry operation where it retries each chosen server several times before moving to another.

      For debugging in such a scenario, where the master is best aware of the situation, it could use that to its advantage and help capture issues better if it probably setup an N retry threshold (for # of servers tried) and run a HTTP GET on the current timing out RS's info port, to capture its /stacks end point and dump the output in its logs for investigation later.

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            • Assignee:
              Unassigned
              Reporter:
              qwertymaniac Harsh J
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              • Created:
                Updated:
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