[jira] [Created] (FLINK-5942) Harden ZooKeeperStateHandleStore to deal with corrupted data

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-5942:
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             Summary: Harden ZooKeeperStateHandleStore to deal with corrupted data
                 Key: FLINK-5942
                 URL: https://issues.apache.org/jira/browse/FLINK-5942
             Project: Flink
          Issue Type: Bug
          Components: State Backends, Checkpointing
    Affects Versions: 1.1.4, 1.2.0, 1.3.0
            Reporter: Till Rohrmann
            Assignee: Till Rohrmann


The {{ZooKeeperStateHandleStore}} cannot handle corrupted Znode data. When calling {{ZooKeeperStateHandleStore.getAll}} or {{getAllSortedByName}} and reading a node with corrupted data, the whole operation will fail. In such a situation, Flink won't be able to recover because it will read over and over again the same corrupted Znodes (in the recovery case). Therefore, I propose to ignore Znodes whose data cannot be read.



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