private void finish() { if (finished.compareAndSet(false, true)) { final ReplicationResponse.ShardInfo.Failure[] failuresArray; if (shardReplicaFailures.isEmpty()) { failuresArray = ReplicationResponse.EMPTY; } else { failuresArray = new ReplicationResponse.ShardInfo.Failure[shardReplicaFailures.size()]; shardReplicaFailures.toArray(failuresArray); } primaryResult.setShardInfo( new ReplicationResponse.ShardInfo( totalShards.get(), successfulShards.get(), failuresArray)); resultListener.onResponse(primaryResult); } }