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  1. HBase
  2. HBASE-14350 Procedure V2 Phase 2: Assignment Manager
  3. HBASE-18102

[SHELL] Purge close_region command that allows by-pass of Master

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 2.0.0
    • Operability, shell
    • None

    Description

      In AMv2, if a RS is not aligned with Master notions of how the world is, then the Master will kill the deviant RS (TODO: is forcing compliance via less radical means – but that is how it is currently).

      The shell currently allows by-passing the Master to make cluster modifications such as our being able to send a close directly to a RegionServer for it to execute locally. This facility was used in the past to do fix-up when Master lost account of Region locations. In the new regime, such mis-accounting should no longer happen and, should a user mistakenly do an explicit close against a RS, the consequences will be more than the user bargained for; the Master will shut down the RS as soon as it reports close of a Region the master thinks should be open (No independence allowed!).

      This issue is to review shell Region and Table manipulation commands to purge those that by-pass Master or at least to add big warning.

      Attachments

        1. HBASE-18102.master.002.patch
          2 kB
          Apekshit Sharma
        2. HBASE-18102.master.001.patch
          5 kB
          Apekshit Sharma

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              appy Apekshit Sharma
              stack Michael Stack
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              Dates

                Created:
                Updated:
                Resolved: