zhijiangW commented on a change in pull request #6833: [FLINK-10537][network]
Fix network small performance degradation after merging [FLINK-9913]
URL: https://github.com/apache/flink/pull/6833#discussion_r225478741
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File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/api/serialization/SpanningRecordSerializer.java
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@@ -92,20 +92,9 @@ public void serializeRecord(T record) throws IOException {
*/
@Override
public SerializationResult copyToBufferBuilder(BufferBuilder
targetBuffer) {
- boolean mustCommit = false;
- if (lengthBuffer.hasRemaining()) {
Review comment:
Yes, comparing the cost of small records currently, that seems less
important. I just mentioned it to explain we can pursue the extreme of avoiding
any unnecessary overheads in theory.
But considering the tradeoff between complication and benefits, I can accept
your current implementation.
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