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  1. HBase
  2. HBASE-21550

Add a new method preCreateTableRegionInfos for MasterObserver which allows CPs to modify the TableDescriptor

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.0.0-alpha-1, 2.2.0
    • Component/s: Coprocessors
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
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      Add a new method preCreateTableRegionInfos for MasterObserver, which will be called before creating region infos for the given table, before the preCreateTable method. It allows you to return a new TableDescritor to override the original one. Returns null or throws exception will stop the creation.
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      Add a new method preCreateTableRegionInfos for MasterObserver, which will be called before creating region infos for the given table, before the preCreateTable method. It allows you to return a new TableDescritor to override the original one. Returns null or throws exception will stop the creation.

      Description

      Before 2.0, we will pass a HTableDescriptor and the CPs can modify the schema of a table, but now we will pass a TableDescriptor, which is immutable. I think it is correct to pass an immutable instance here, but we should have a return value for this method to allow CPs to return a new TableDescriptor.

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        1. HBASE-21550.patch
          9 kB
          Duo Zhang

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            • Assignee:
              zhangduo Duo Zhang
              Reporter:
              zhangduo Duo Zhang
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              • Created:
                Updated:
                Resolved: