[GitHub] ilooner commented on a change in pull request #1409: DRILL-6644: Don't reserve space for incoming probe batches unnecessarily during the build phase.

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ilooner commented on a change in pull request #1409: DRILL-6644: Don't reserve space for incoming probe batches unnecessarily during the build phase.
URL: https://github.com/apache/drill/pull/1409#discussion_r207436910
 
 

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 File path: exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/HashJoinMemoryCalculatorImpl.java
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 @@ -391,7 +391,7 @@ private void calculateMemoryUsage()
         // probe batch we sniffed.
         // TODO when batch sizing project is complete we won't have to sniff probe batches since
         // they will have a well defined size.
-        reservedMemory = incompletePartitionsBatchSizes + maxBuildBatchSize + maxProbeBatchSize;
+        reservedMemory = incompletePartitionsBatchSizes + maxBuildBatchSize + probeSizePredictor.getBatchSize();
 
 Review comment:
   I'm not sure. I think we need to get some clarification for the desired behavior of operators. If the Drill engine is operating under the assumption that ownership of VectorContainers passes to a downstream operator after a call to next, then this is a bug that should be fixed.
   
   I will ask a question on the dev list about this.

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