AndrewJSchofield commented on code in PR #17739:
URL: https://github.com/apache/kafka/pull/17739#discussion_r1835733808
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core/src/main/java/kafka/server/share/DelayedShareFetch.java:
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@@ -90,14 +90,17 @@ public void onExpiration() {
*/
@Override
public void onComplete() {
+ // We are utilizing lock so that onComplete doesn't do a dirty read
for global variables -
+ // partitionsAcquired and partitionsAlreadyFetched, since these
variables can get updated in a different tryComplete thread.
+ lock.lock();
log.trace("Completing the delayed share fetch request for group {},
member {}, "
+ "topic partitions {}", shareFetchData.groupId(),
shareFetchData.memberId(),
partitionsAcquired.keySet());
if (shareFetchData.future().isDone())
return;
Review Comment:
Hmm. Isn't this a return without unlocking? Seems wrong. I wonder if you
should rearrange the code here so there's a try-finally and it's not possible
to exit the method without unlocking.
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