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https://issues.apache.org/jira/browse/IMPALA-4872?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Ho resolved IMPALA-4872.
--------------------------------
Resolution: Fixed
Fixed at
https://github.com/apache/incubator-impala/commit/7b6ad283f46d31aa953d4d44e142b0bc6b0afbb4
> Remove per-RPC DNS lookup
> -------------------------
>
> Key: IMPALA-4872
> URL: https://issues.apache.org/jira/browse/IMPALA-4872
> Project: IMPALA
> Issue Type: Sub-task
> Components: Distributed Exec
> Affects Versions: Impala 2.9.0
> Reporter: Henry Robinson
> Assignee: Michael Ho
>
> The implementation of {{Rpc::Execute()}} in IMPALA-4670 does a DNS lookup
> every time. This can be expensive without properly administered DNS, so
> Impala should cache the name resolution and implement a TTL-based expiration
> itself.
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