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https://issues.apache.org/jira/browse/IMPALA-3124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17254208#comment-17254208
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Vihang Karajgaonkar commented on IMPALA-3124:
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For the metastore events, we have already implemented a event based refresh in
IMPALA-7954.
> Add external metadata notification mechanisms to Impala
> -------------------------------------------------------
>
> Key: IMPALA-3124
> URL: https://issues.apache.org/jira/browse/IMPALA-3124
> Project: IMPALA
> Issue Type: New Feature
> Components: Catalog
> Affects Versions: Impala 2.2.4
> Reporter: Dimitris Tsirogiannis
> Priority: Major
> Labels: catalog-server
>
> Currently, users needs to run refresh/invalidate metadata to update metadata
> when data (files, blocks) and/or metadata (tables, partitions) are modified
> externally. These operation cause many consistency and performance issues. We
> should add external metadata notification mechanism (e.g. inotify or HMS
> listeners) so that the catalog server can automatically sync metadata as they
> change.
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