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_r215611435
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/api/writer/RecordWriter.java
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@@ -197,40 +214,39 @@ public void setMetricGroup(TaskIOMetricGroup metrics) {
* Marks the current {@link BufferBuilder} as finished and clears the
state for next one.
*/
private void tryFinishCurrentBufferBuilder(int targetChannel) {
- if (bufferBuilders[targetChannel].isPresent()) {
- BufferBuilder bufferBuilder =
bufferBuilders[targetChannel].get();
+ Optional<BufferBuilder> bufferBuilderOpt =
bufferBuilders[targetChannel];
+ if (bufferBuilderOpt.isPresent()) {
bufferBuilders[targetChannel] = Optional.empty();
- numBytesOut.inc(bufferBuilder.finish());
+ numBytesOut.inc(bufferBuilderOpt.get().finish());
numBuffersOut.inc();
}
}
-
+
/**
* The {@link BufferBuilder} may already exist if not filled up last
time, otherwise we need
* request a new one for this target channel.
*/
- @Nonnull
private BufferBuilder getBufferBuilder(int targetChannel) throws
IOException, InterruptedException {
- if (bufferBuilders[targetChannel].isPresent()) {
- return bufferBuilders[targetChannel].get();
+ Optional<BufferBuilder> bufferBuilderOpt =
bufferBuilders[targetChannel];
Review comment:
ditto: rename or inline
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