Github user amansinha100 commented on a diff in the pull request:
https://github.com/apache/drill/pull/172#discussion_r40605696
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java
---
@@ -615,11 +608,18 @@ private SelectionVector2 newSV2() throws
OutOfMemoryException, InterruptedExcept
SelectionVector2 sv2 = new SelectionVector2(oContext.getAllocator());
if (!sv2.allocateNewSafe(incoming.getRecordCount())) {
try {
- spilledBatchGroups.addFirst(mergeAndSpill(batchGroups));
+ // Not being able to allocate sv2 means this operator's allocator
reached it's maximum capacity.
+ // Spilling this.batchGroups won't help here as they are owned by
another operator,
--- End diff --
Can you change this to 'owned by upstream operator'
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