Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/3881#discussion_r116185935 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/zookeeper/ZooKeeperStateHandleStore.java --- @@ -346,11 +346,7 @@ public int exists(String pathInZooKeeper) throws Exception { } else { // Initial cVersion (number of changes to the children of this node) int initialCVersion = stat.getCversion(); - - List<String> children = ZKPaths.getSortedChildren( - client.getZookeeperClient().getZooKeeper(), - ZKPaths.fixForNamespace(client.getNamespace(), "/")); - + List<String> children = client.getZookeeperClient().getZooKeeper().getChildren(ZKPaths.fixForNamespace(client.getNamespace(), "/"), false); --- End diff -- I think this alone does not work: The JavaDocs of `ZooKeeper#getChildren` say > The list of children returned is not sorted and no guarantee is provided as to its natural or lexical order. Thus, I assume that it is not safe to simply return the list of children without any further processing.
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