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https://issues.apache.org/jira/browse/IMPALA-6057?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Greg Rahn resolved IMPALA-6057.
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Resolution: Duplicate
Seems like a duplicate of IMPALA-8341 now.
> Cache Remote Reads
> ------------------
>
> Key: IMPALA-6057
> URL: https://issues.apache.org/jira/browse/IMPALA-6057
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 2.11.0
> Reporter: Jim Apple
> Priority: Major
>
> Reads from local disk might be cached in-memory by the OS. Reads from s3
> should be cached when possible, using {{getETag()}} and {{getLstModified()}}
> for coherence/invalidation.
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