Ben-Zvi commented on a change in pull request #1324: DRILL-6310: limit batch
size for hash aggregate
URL: https://github.com/apache/drill/pull/1324#discussion_r199274012
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File path:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/common/HashTableTemplate.java
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@@ -568,8 +576,10 @@ private void retryAfterOOM(boolean batchAdded) throws
RetryAfterSpillException {
if ( batchAdded ) {
logger.trace("OOM - Removing index {} from the batch holders
list",batchHolders.size() - 1);
BatchHolder bh = batchHolders.remove(batchHolders.size() - 1);
+ prevIndexSize = batchHolders.size() > 1 ? (batchHolders.size()-1) *
BATCH_SIZE : 0;
+ totalIndexSize = batchHolders.size() * BATCH_SIZE;
// update freeIndex to point to end of last batch + 1
- freeIndex = batchHolders.size() * BATCH_SIZE + 1;
+ freeIndex = totalIndexSize + 1;
Review comment:
No need for "+ 1" -- the free index starts at batch offset of zero.
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