pphust ffcbd1ecb8 Ensure ReferenceCountingSegment.decrement() is invoked correctly (#8323)
* fix issue8291. Make sure ReferenceCountingSegment.decrement() is invoked correctly

* add some comments in SinkQuerySegmentWalker.java

* extracting perSegmentRunners and perHydrantRunners to reduce the level of nesting
2019-08-20 22:01:16 +03:00
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