[jira] [Resolved] (HDFS-14020) Emulate Observer node falling far behind the Active

["Konstantin Shvachko (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-14020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Konstantin Shvachko resolved HDFS-14020.
----------------------------------------
    Resolution: Duplicate

Resolving as duplicate since HDFS-13873 introduced {{testObserverFallBehind()}} in {{TestMultiObserverNode}}, which serves the purpose. This has also been already tested on live clusters.

> Emulate Observer node falling far behind the Active
> ---------------------------------------------------
>
>                 Key: HDFS-14020
>                 URL: https://issues.apache.org/jira/browse/HDFS-14020
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Sherwood Zheng
>            Assignee: Sherwood Zheng
>            Priority: Major
>
> Emulate Observer node falling far behind the Active. Ensure readers switch over
> to another Observer instead of waiting for the lagging Observer to catch up. If
> there is only a single Observer, it should fall back to the Active.



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