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https://issues.apache.org/jira/browse/IMPALA-11129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17507914#comment-17507914
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Wenzhe Zhou commented on IMPALA-11129:
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Another scenarios to use KRPC over UDS is the Impala deployment in Kubernetes,
where the network throughput could be bottleneck when mTLS is applied. Since
Impalad and istio-proxy are located on same host, we could use KRPC over UDS to
improve the network performance between impala daemon and istio-proxy.
> Support running KRPC over Unix domain socket
> --------------------------------------------
>
> Key: IMPALA-11129
> URL: https://issues.apache.org/jira/browse/IMPALA-11129
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend, Distributed Exec
> Reporter: Wenzhe Zhou
> Priority: Major
>
> KRPC was extended to support Unix domain socket in Apache Kudu. The patches
> for this new feature involves code change in kudu/rpc, kudu/security and
> kudu/util. We recently synced up the source code in kudu/rpc, kudu/security
> and kusu/util with Kudu upstream so we can leverage the new functionalities
> provided by Kudu source to support running KRPC over Unix domain socket.
> For the Impala mini-cluster, all Impala daemons are running on the same host.
> We can run KRPC over Unix domain sockets instead of TCP.
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