pnowojski commented on a change in pull request #10177: [FLINK-14747] Fix
performance regression with latest changes to Mailbox
URL: https://github.com/apache/flink/pull/10177#discussion_r346187113
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File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/mailbox/TaskMailboxImpl.java
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@@ -165,7 +164,8 @@ public boolean createBatch() {
@Override
public Optional<Mail> tryTakeFromBatch() {
checkIsMailboxThread();
- return Optional.ofNullable(takeOrNull(batch, MIN_PRIORITY));
+ checkTakeStateConditions();
+ return Optional.ofNullable(batch.pollFirst());
Review comment:
Are those lines related to the performance fix? A refactor or a bug fix?
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