[jira] [Updated] (FLINK-6052) Potential null access in ZooKeeperCompletedCheckpointStore#getLatestCheckpoint()

["Chesnay Schepler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-6052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chesnay Schepler updated FLINK-6052:
------------------------------------
    Affects Version/s: 1.3.0

> Potential null access in ZooKeeperCompletedCheckpointStore#getLatestCheckpoint()
> --------------------------------------------------------------------------------
>
>                 Key: FLINK-6052
>                 URL: https://issues.apache.org/jira/browse/FLINK-6052
>             Project: Flink
>          Issue Type: Bug
>          Components: Distributed Coordination, State Backends, Checkpointing
>    Affects Versions: 1.3.0
>            Reporter: Ted Yu
>            Assignee: Chesnay Schepler
>            Priority: Minor
>
> {code}
>         Tuple2<RetrievableStateHandle<CompletedCheckpoint>, String> checkpointStateHandle = checkpointStateHandles.peekLast();
>         try {
>           return retrieveCompletedCheckpoint(checkpointStateHandle);
>         } catch (Exception e) {
>           LOG.warn("Could not retrieve latest checkpoint. Removing it from " +
>             "the completed checkpoint store.", e);
>           try {
>             // remove the checkpoint with broken state handle
>             removeBrokenStateHandle(checkpointStateHandles.pollLast());
>           } catch (Exception removeException) {
> {code}
> The code should handle the case where peekLast() / pollLast() returns null.



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