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  1. HBase
  2. HBASE-18169

Coprocessor fix and cleanup before 2.0.0 release

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Details

    • Improvement
    • Status: Closed
    • Blocker
    • Resolution: Fixed
    • 2.0.0-alpha-1
    • 2.0.0-beta-1, 2.0.0
    • Coprocessors
    • None
    • Hide
      Refactor of Coprocessor API for hbase2. Purged methods that exposed too much of our internals. Other hooks were recast so they no longer took or returned internal classes; instead we pass Interfaces or read-only versions of implementations.

      Here is some overview doc on changes in hbase2 for Coprocessors including detail on why the change was made:
      https://github.com/apache/hbase/blob/branch-2.0/dev-support/design-docs/Coprocessor_Design_Improvements-Use_composition_instead_of_inheritance-HBASE-17732.adoc

      More general background on why CPs had to change: https://docs.google.com/document/d/10cabwp_aR3OmpHVoeh544YLC3KwqMD9KiTIrHZAmfec/edit#
      Show
      Refactor of Coprocessor API for hbase2. Purged methods that exposed too much of our internals. Other hooks were recast so they no longer took or returned internal classes; instead we pass Interfaces or read-only versions of implementations. Here is some overview doc on changes in hbase2 for Coprocessors including detail on why the change was made: https://github.com/apache/hbase/blob/branch-2.0/dev-support/design-docs/Coprocessor_Design_Improvements-Use_composition_instead_of_inheritance-HBASE-17732.adoc More general background on why CPs had to change: https://docs.google.com/document/d/10cabwp_aR3OmpHVoeh544YLC3KwqMD9KiTIrHZAmfec/edit#

    Description

      As discussed in HBASE-18038. In RegionServerServices, Region and StoreFile interfaces we expose too many unnecessary methods. We need to find a way to not expose these methods to CP.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. HBASE-16769 Deprecate/remove PB references from MasterObserver and RegionServerObserver

          • Blocker - Blocks development and/or testing work, production could not run
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-17732 Coprocessor Design Improvements

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          relates to

          Sub-task - The sub-task of the issue HBASE-17312 [JDK8] Use default method for Observer Coprocessors

          • Major - Major loss of function.
          • Closed
          There are no Sub-Tasks for this issue.

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              zhangduo Duo Zhang
              zhangduo Duo Zhang
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                Created:
                Updated:
                Resolved: