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https://issues.apache.org/jira/browse/TEZ-4236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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László Bodor updated TEZ-4236:
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Description: For a customer, we found that they're trying to run hive on
tez local mode tests, and due to strict firewall rules and security policy, the
DagClientServer struggles to start or respond to connections. Instead of
investigating the network-related workarounds, let's find a way if DAGAppMaster
really needs this server. LocalClient has an embedded
[DAGAppMaster|https://github.com/apache/tez/blob/master/tez-dag/src/main/java/org/apache/tez/client/LocalClient.java#L65],
so at the first sight, it doesn't make sense to rely on the network
environment in terms of AM usage. Hopefully, AM can become more lightweight in
the long term if we try to eliminate pointless network usage.
> Investigate if DAGAppMaster's DAGClientServer is really need to be
> started/used in local mode
> ---------------------------------------------------------------------------------------------
>
> Key: TEZ-4236
> URL: https://issues.apache.org/jira/browse/TEZ-4236
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: László Bodor
> Assignee: László Bodor
> Priority: Major
>
> For a customer, we found that they're trying to run hive on tez local mode
> tests, and due to strict firewall rules and security policy, the
> DagClientServer struggles to start or respond to connections. Instead of
> investigating the network-related workarounds, let's find a way if
> DAGAppMaster really needs this server. LocalClient has an embedded
> [DAGAppMaster|https://github.com/apache/tez/blob/master/tez-dag/src/main/java/org/apache/tez/client/LocalClient.java#L65],
> so at the first sight, it doesn't make sense to rely on the network
> environment in terms of AM usage. Hopefully, AM can become more lightweight
> in the long term if we try to eliminate pointless network usage.
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