carp84 commented on a change in pull request #10329: [FLINK-12785][StateBackend] RocksDB savepoint recovery can use a lot of unmanaged memory URL: https://github.com/apache/flink/pull/10329#discussion_r353830704
########## File path: flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBKeyedStateBackend.java ########## @@ -244,6 +252,8 @@ public RocksDBKeyedStateBackend( this.kvStateInformation = kvStateInformation; this.writeOptions = new WriteOptions().setDisableWAL(true); + checkArgument(writeBatchSize >= 0, "Write batch size have to be no negative value."); Review comment: Let me confirm, does the `@Nonnull` annotation work out of IntelliJ? In previous review I was also suggested to remove null pointer checker with `@Nonnull` annotation, maybe this a diverge of code style taste and we should make some discussion in ML and mark them down in our code convention? Another fact is that there're many `@Nonnegative` annotated methods without additional checking, like [HeapPriorityQueueStateSnapshot](https://github.com/apache/flink/blob/e505bef16c2c11250a2420610c1605a4e64b6d10/flink-runtime/src/main/java/org/apache/flink/runtime/state/heap/HeapPriorityQueueStateSnapshot.java#L71), [KeyGroupPartitioner](https://github.com/apache/flink/blob/e505bef16c2c11250a2420610c1605a4e64b6d10/flink-runtime/src/main/java/org/apache/flink/runtime/state/KeyGroupPartitioner.java#L108), etc. It might be good if we align our code style? Wdyt? Thanks. ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services