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From "Andrew Purtell" <apurt...@apache.org>
Subject Re: Review Request: HBASE-2001 RegionObserver
Date Tue, 01 Jun 2010 05:30:41 GMT

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(Updated 2010-05-31 22:30:41.618893)

Review request for hbase.


This patch is the parts of the HBASE-2001 patch which implements support for the RegionObserver
interface. This enables extension of the regionserver through stacking dynamically loaded
classes i.e. from jars on HDFS onto upcalls from HRegion. I made some improvements over the
other patch and added a test case. There are other parts of 2001 which need some thought and
some work and would not be useful without client side support. This is the part which could
be immediately useful. 

Submitted for feedback. 

Incorporates a user suggestion and Stack +1 about hooking compaction.

This addresses bug HBASE-2001.


  src/main/java/org/apache/hadoop/hbase/coprocessor/Coprocessor.java PRE-CREATION 
  src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java PRE-CREATION 
  src/main/java/org/apache/hadoop/hbase/regionserver/CoprocessorHost.java PRE-CREATION 
  src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java 2413e98 
  src/main/java/org/apache/hadoop/hbase/regionserver/MinorCompactingStoreScanner.java 71f738e

  src/main/java/org/apache/hadoop/hbase/regionserver/Store.java 515b42f 
  src/test/java/org/apache/hadoop/hbase/coprocessor/TestClassloading.java PRE-CREATION 
  src/test/java/org/apache/hadoop/hbase/coprocessor/TestCoprocessorInterface.java PRE-CREATION

  src/test/java/org/apache/hadoop/hbase/coprocessor/TestRegionObserverInterface.java PRE-CREATION

  src/test/java/org/apache/hadoop/hbase/coprocessor/TestRegionObserverStacking.java PRE-CREATION

Diff: http://review.hbase.org/r/96/diff


All the new unit tests plus TestHRegion pass locally.



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