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From JamesRTaylor <...@git.apache.org>
Subject [GitHub] phoenix pull request: PHOENIX-2628 Ensure split when iterating thr...
Date Tue, 05 Apr 2016 03:21:08 GMT
Github user JamesRTaylor commented on a diff in the pull request:

    https://github.com/apache/phoenix/pull/156#discussion_r58482075
  
    --- Diff: phoenix-core/src/main/java/org/apache/phoenix/coprocessor/GroupedAggregateRegionObserver.java
---
    @@ -402,8 +405,8 @@ private RegionScanner scanUnordered(ObserverContext<RegionCoprocessorEnvironment
                 }
     
                 Region region = c.getEnvironment().getRegion();
    -            region.startRegionOperation();
                 try {
    +                region.startRegionOperation();
    --- End diff --
    
    Doesn't startRegionOperation() take a lock which would prevent a split from occurring
and thus a NotServingRegionException from happening? Or is this the case where the split occurred
after pre open, but before we start iterating? Let's doc that please.


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