Github user sihuazhou commented on a diff in the pull request: https://github.com/apache/flink/pull/6156#discussion_r195019971 --- Diff: flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBListState.java --- @@ -237,4 +249,20 @@ public void addAll(List<V> values) throws Exception { return keySerializationStream.toByteArray(); } + + @Override + public List<V> getInternal() { + Iterable<V> list = get(); + if (list == null) { + return null; + } + List<V> collected = new ArrayList<>(); --- End diff -- Maybe we could give this a safe init size, e.g (4).
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