Github user StephanEwen commented on a diff in the pull request: https://github.com/apache/flink/pull/3143#discussion_r97049360 --- Diff: flink-contrib/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/AbstractRocksDBState.java --- @@ -132,55 +132,95 @@ public void setCurrentNamespace(N namespace) { namespaceSerializer); int keyGroup = KeyGroupRangeAssignment.assignToKeyGroup(des.f0, backend.getNumberOfKeyGroups()); - writeKeyWithGroupAndNamespace(keyGroup, des.f0, des.f1); - return backend.db.get(columnFamily, keySerializationStream.toByteArray()); + + // we cannot reuse the keySerializationStream member since this method + // is called concurrently to the other ones and it may thus contain garbage + ByteArrayOutputStreamWithPos tmpKeySerializationStream = --- End diff -- Please try to use the same style as the remainder of the project. I know that every programmer in the world has figured out the perfect code style and is very opinionated on that ;-) Keeping a coherent style in a project is worth a lot and worth compromising...
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