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https://issues.apache.org/jira/browse/HIVE-10725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14556979#comment-14556979
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Yi Zhang commented on HIVE-10725:
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One use case: user can start multiple HS instances with different modes and
authentications, it would be nice if a jdbc client with certain connection
string connect to the zookeeper assemble, finds a correct HS2 for it. For
example, if HS2_A runs in http mode, HS2_B runs in binary mode, client gives
binary mode connection string, it should connect to HS2_B, instead of getting
HS2_A.
> Better resource management in HiveServer2
> -----------------------------------------
>
> Key: HIVE-10725
> URL: https://issues.apache.org/jira/browse/HIVE-10725
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2, JDBC
> Affects Versions: 1.3.0
> Reporter: Vaibhav Gumashta
>
> We have various ways to control the number of queries that can be run on one
> HS2 instance (max threads, thread pool queuing etc). We also have ways to run
> multiple HS2 instances using dynamic service discovery. We should do a better
> job at:
> 1. Monitoring resource utilization (sessions, ophandles, memory, threads etc).
> 2. Being upfront to the client when we cannot accept new queries.
> 3. Throttle among different server instances in case dynamic service
> discovery is used.
> 4. Consolidate existing ways to control #queries into a simpler model.
> 5. See if we can recommend reasonable values for OS resources or provide
> alerts if we run out of those.
> 6. Health reports, server status API (to get number of queries, sessions etc).
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