leventov commented on a change in pull request #6699: release mmap immediately 
after merge indexes
URL: https://github.com/apache/incubator-druid/pull/6699#discussion_r239533481
 
 

 ##########
 File path: 
server/src/main/java/org/apache/druid/segment/realtime/appenderator/AppenderatorImpl.java
 ##########
 @@ -716,8 +717,20 @@ private DataSegment mergeAndPush(final SegmentIdentifier 
identifier, final Sink
           closer.register(segmentAndCloseable.rhs);
         }
 
-        mergedFile = indexMerger.mergeQueryableIndex(
-            indexes,
 
 Review comment:
   @kaijianding I agree with @clintropolis, maybe this PR is incomplete, and 
you planned to free those `indexes`? In it's current form the PR doesn't free 
any extra resources that were (probably unnecessarily) held before by the 
worker process.

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