Github user shixiaogang commented on a diff in the pull request: https://github.com/apache/flink/pull/3859#discussion_r116148624 --- Diff: flink-contrib/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBKeyedStateBackend.java --- @@ -911,9 +915,11 @@ void releaseResources(boolean canceled) { if (canceled) { List<StateObject> statesToDiscard = new ArrayList<>(); - statesToDiscard.add(metaStateHandle); - statesToDiscard.addAll(miscFiles.values()); - statesToDiscard.addAll(newSstFiles.values()); + synchronized (this) { --- End diff -- Yes, i agree. The key point here is to make sure the stopping of the materialization thread. Synchronization does little help here. So i prefer to remove synchronization here, what do you think?
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---