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https://issues.apache.org/jira/browse/IMPALA-3620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Csaba Ringhofer resolved IMPALA-3620.
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Resolution: Duplicate
> Consider implementing PrivilegeCache with listPrivileges based on
> authorization hierarchy
> -----------------------------------------------------------------------------------------
>
> Key: IMPALA-3620
> URL: https://issues.apache.org/jira/browse/IMPALA-3620
> Project: IMPALA
> Issue Type: Improvement
> Components: Catalog
> Affects Versions: Impala 2.5.0
> Reporter: Huaisi Xu
> Priority: Major
>
> Impala's authentication can be slow on get_schema and show databases etc. due
> to Sentry's implementation.
> Once they have https://issues.apache.org/jira/browse/SENTRY-1291 in place.
> Impala should use their new api listPrivileges for authentication. According
> to Hao Hao from Sentry team, improvement is 15x with many roles/grants in
> Hive.
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