gianm commented on code in PR #13503:
URL: https://github.com/apache/druid/pull/13503#discussion_r1041718140
##########
indexing-service/src/main/java/org/apache/druid/indexing/common/actions/SegmentAllocationQueue.java:
##########
@@ -198,6 +199,24 @@ public Future<SegmentIdWithShardSpec>
add(SegmentAllocateRequest request)
return futureReference.get();
}
+ /**
+ * Returns the key for a batch that is not added to the queue yet and/or has
+ * available space. Throws an exception if the queue is already full and no
+ * batch has available capacity.
+ */
+ private AllocateRequestKey getKeyForAvailableBatch(SegmentAllocateRequest
request)
+ {
+ for (int batchIncrementalId = 0; batchIncrementalId < MAX_QUEUE_SIZE;
++batchIncrementalId) {
+ AllocateRequestKey nextKey = new AllocateRequestKey(request,
maxWaitTimeMillis, batchIncrementalId);
+ AllocateRequestBatch nextBatch = keyToBatch.get(nextKey);
+ if (nextBatch == null || nextBatch.size() < MAX_BATCH_SIZE) {
+ return nextKey;
+ }
+ }
+
+ throw new ISE("Allocation queue is at capacity, all batches are full.");
Review Comment:
Got it. Sounds good to me.
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