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https://issues.apache.org/jira/browse/IMPALA-12156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17725551#comment-17725551
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Wenzhe Zhou commented on IMPALA-12156:
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Here is the design doc for SS and CatalogD HA:
https://docs.google.com/document/d/1jYNI_TE6FTEgQSJFCON8P9rLpwRE1ByNfF2U3yFfCR8/edit?usp=sharing
> Support Impala Statestore HA
> ----------------------------
>
> Key: IMPALA-12156
> URL: https://issues.apache.org/jira/browse/IMPALA-12156
> Project: IMPALA
> Issue Type: New Feature
> Affects Versions: Impala 4.1.2
> Reporter: Zhi Tang
> Assignee: Wenzhe Zhou
> Priority: Major
>
> The Impala component known as the StateStore checks on the health of all
> Impala daemons in a cluster, and continuously relays its findings to each of
> those daemons. If the Statestore is not running or becomes unreachable, the
> cluster becomes less robust and metadata becomes less consistent as it
> changes. Therefore, implementing high availability for the Statestore is
> essential for the stability of the cluster.
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