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Posted to issues@impala.apache.org by "Michael Ho (JIRA)" <ji...@apache.org> on 2017/08/31 04:58:00 UTC

[jira] [Resolved] (IMPALA-4872) Remove per-RPC DNS lookup

     [ https://issues.apache.org/jira/browse/IMPALA-4872?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

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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