pnowojski commented on a change in pull request #6417: [FLINK-9913][runtime]
Improve output serialization only once in RecordWriter
URL: https://github.com/apache/flink/pull/6417#discussion_r209290889
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/api/serialization/RecordSerializer.java
##########
@@ -66,29 +66,33 @@ public boolean isFullBuffer() {
}
/**
- * Starts serializing and copying the given record to the target buffer
- * (if available).
+ * Starts serializing the given record to an intermediate data buffer.
*
* @param record the record to serialize
- * @return how much information was written to the target buffer and
- * whether this buffer is full
*/
- SerializationResult addRecord(T record) throws IOException;
+ void serializeRecord(T record) throws IOException;
Review comment:
I'm thinking about refactoring this class and splitting it into two:
```
class RecordSerializer {
SerializedRecord serializeRecord(T record);
};
class SerializedRecord implements Autoclosable {
CopingResult copyToBufferBuilder(BufferBuilder bufferBuilder);
void close() {
serializer.prune();
// and code to return state (serializationBuffer) to serializer for
reuse
}
}
```
and usage:
```
public void randomEmit(T record) throws IOException,
InterruptedException {
try (SerializedRecord serializedRecord =
serializer.serializeRecord(record)) {
copyToTarget(serializedRecord,
rng.nextInt(numChannels));
}
}
```
somehow always was/is tickling my brain in current `RecordSerializer` is
confusing to me and I have to always check it's implementation whenever I
revisit the code. Maybe with this split it would be easier to understand? But
I'm not sure about this. What do you think?
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