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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-5942) Harden ZooKeeperStateHandleStore to deal with corrupted data
Date Tue, 14 Mar 2017 08:18:41 GMT

    [ https://issues.apache.org/jira/browse/FLINK-5942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15923759#comment-15923759
] 

ASF GitHub Bot commented on FLINK-5942:
---------------------------------------

Github user tillrohrmann closed the pull request at:

    https://github.com/apache/flink/pull/3449


> 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: 1.2.0, 1.1.4, 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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