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https://issues.apache.org/jira/browse/IMPALA-3681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16610944#comment-16610944
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Lars Volker commented on IMPALA-3681:
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[~davidxdh] - I don't have a detailed update, but some major work on Impala's
metadata handling is currently under way in IMPALA-7127.
[~tlipcon] and [~vercegovac] might have more details.
> Automatic invalidation of HMS metadata using Hive replication API (HIVE-7973)
> -----------------------------------------------------------------------------
>
> Key: IMPALA-3681
> URL: https://issues.apache.org/jira/browse/IMPALA-3681
> Project: IMPALA
> Issue Type: Sub-task
> Components: Catalog
> Affects Versions: Impala 2.6.0
> Reporter: Dimitris Tsirogiannis
> Priority: Minor
> Labels: catalog-server
>
> Hive is adding support for a replication API
> (https://issues.apache.org/jira/browse/HIVE-7973) that allows an HMS client
> to retrieve a global stream of HMS modifications made by all the HMS
> processes (in case of HMS HA). The Catalog server could use that API to
> automatically collect and update cached HMS metadata, thus eliminating the
> need for the user to call invalidate and refresh. This can only handle HMS
> metadata; file and block metadata will still need to be updated from the
> Namenode (e.g. by using inotify).
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