[SR-4679] Adjust the order of branches for case 'TestArray_test_array…

…_column_with_count_distinct' (StarRocks#300)

.gitignore

@@ -32,6 +32,7 @@ fe/ut_ports
 fe/*/target
 dependency-reduced-pom.xml
 tags
+.tags
 
 
 #ignore eclipse project file & idea project file

be/src/exec/pipeline/exchange/exchange_sink_operator.cpp

@@ -303,9 +303,25 @@ Status ExchangeSinkOperator::push_chunk(RuntimeState* state, const vectorized::C
     if (num_rows == 0) {
         return Status::OK();
     }
-
-    if (_part_type == TPartitionType::HASH_PARTITIONED ||
-        _part_type == TPartitionType::BUCKET_SHFFULE_HASH_PARTITIONED) {
+    if (_part_type == TPartitionType::UNPARTITIONED || _channels.size() == 1) {
+        // We use sender request to avoid serialize chunk many times.
+        // 1. create a new chunk PB to serialize
+        ChunkPB* pchunk = _chunk_request.add_chunks();
+        // 2. serialize input chunk to pchunk
+        RETURN_IF_ERROR(serialize_chunk(chunk.get(), pchunk, &_is_first_chunk, _channels.size()));
+        _current_request_bytes += pchunk->data().size();
+        // 3. if request bytes exceede the threshold, send current request
+        if (_current_request_bytes > _request_bytes_threshold) {
+            butil::IOBuf attachment;
+            // construct_brpc_attachment(&_chunk_request, &attachment);
+            for (auto channel : _channels) {
+                RETURN_IF_ERROR(channel->send_chunk_request(&_chunk_request, attachment));
+            }
+            _current_request_bytes = 0;
+            _chunk_request.clear_chunks();
+        }
+    } else if (_part_type == TPartitionType::HASH_PARTITIONED ||
+               _part_type == TPartitionType::BUCKET_SHFFULE_HASH_PARTITIONED) {
         // hash-partition batch's rows across channels
         int num_channels = _channels.size();
         {
@@ -362,23 +378,6 @@ Status ExchangeSinkOperator::push_chunk(RuntimeState* state, const vectorized::C
             }
             RETURN_IF_ERROR(_channels[i]->add_rows_selective(chunk.get(), _row_indexes.data(), from, size));
         }
-    } else if (_part_type == TPartitionType::UNPARTITIONED || _channels.size() == 1) {
-        // We use sender request to avoid serialize chunk many times.
-        // 1. create a new chunk PB to serialize
-        ChunkPB* pchunk = _chunk_request.add_chunks();
-        // 2. serialize input chunk to pchunk
-        RETURN_IF_ERROR(serialize_chunk(chunk.get(), pchunk, &_is_first_chunk, _channels.size()));
-        _current_request_bytes += pchunk->data().size();
-        // 3. if request bytes exceede the threshold, send current request
-        if (_current_request_bytes > _request_bytes_threshold) {
-            butil::IOBuf attachment;
-            // construct_brpc_attachment(&_chunk_request, &attachment);
-            for (auto channel : _channels) {
-                RETURN_IF_ERROR(channel->send_chunk_request(&_chunk_request, attachment));
-            }
-            _current_request_bytes = 0;
-            _chunk_request.clear_chunks();
-        }
     }
     return Status::OK();
 }