pnowojski commented on code in PR #21503:
URL: https://github.com/apache/flink/pull/21503#discussion_r1104462237
##########
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/StreamTask.java:
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@@ -417,7 +420,12 @@ protected StreamTask(
this.asyncExceptionHandler = new
StreamTaskAsyncExceptionHandler(environment);
this.asyncOperationsThreadPool =
- Executors.newCachedThreadPool(
+ new ThreadPoolExecutor(
+ 0,
+ configuration.getMaxConcurrentCheckpoints() + 1,
Review Comment:
nit: maybe add a comment explaining this value?
> With maxConcurrentCheckpoints + 1 we more or less adhere to the
maxConcurrentCheckpoints configuration, but allow for a small leeway with
allowing for simultaneous N ongoing concurrent checkpoints and for example
clean up of one aborted one.
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