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https://issues.apache.org/jira/browse/HIVE-16571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16007793#comment-16007793
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Gopal V commented on HIVE-16571:
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Tested this on the cluster, works exactly as expected - most recently used
session gets used again.
> HiveServer2: Prefer LIFO over round-robin for Tez session reuse
> ---------------------------------------------------------------
>
> Key: HIVE-16571
> URL: https://issues.apache.org/jira/browse/HIVE-16571
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2, Tez
> Affects Versions: 3.0.0
> Reporter: Gopal V
> Assignee: Gopal V
> Attachments: HIVE-16571.2.patch, HIVE-16571.patch
>
>
> Currently Tez session reuse is entirely round-robin, which means a single
> user might have to run upto 32 queries before reusing a warm session on a
> HiveServer2.
> This is not the case when session reuse is disabled, with a user warming up
> their session on the 1st query.
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