juntaozhang opened a new issue, #2771: URL: https://github.com/apache/fluss/issues/2771
### Search before asking - [x] I searched in the [issues](https://github.com/apache/fluss/issues) and found nothing similar. ### Fluss version main (development) ### Please describe the bug 🐞 In extreme cases, when testing Delta Join in Flink, after the checkpoint is completed, it will call notifyCheckpointComplete. However, for some reason, although the request is sent, the response reception fails. As a result, Flink keeps sending the request repeatedly and keeps failing, leading to an inconsistency between the Flink state and the Fluss state. ``` java.util.concurrent.ExecutionException: org.apache.fluss.exception.UnknownServerException: org.apache.fluss.exception.UnknownServerException: Failed to release kv snapshot lease for8af2a797-779d-4690-8e2b-14f889791412 Caused by: java.lang.NullPointerException: Cannot invoke "org.apache.fluss.server.zk.data.lease.KvSnapshotTableLease.getBucketSnapshots()" because "tableLease" is null at org.apache.fluss.server.coordinator.lease.KvSnapshotLeaseHandler.releaseBucket(KvSnapshotLeaseHandler.java:141) at org.apache.fluss.server.coordinator.lease.KvSnapshotLeaseManager.lambda$release$3(KvSnapshotLeaseManager.java:267) at org.apache.fluss.utils.concurrent.LockUtils.inLock(LockUtils.java:32) ``` ### Solution _No response_ ### Are you willing to submit a PR? - [x] I'm willing to submit a PR! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
