[jira] [Created] (IMPALA-8418) Restrict user from setting resource limits to high values at session level

["Bikramjeet Vig (JIRA)" <ji...@apache.org>]

Bikramjeet Vig created IMPALA-8418:
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             Summary: Restrict user from setting resource limits to high values at session level
                 Key: IMPALA-8418
                 URL: https://issues.apache.org/jira/browse/IMPALA-8418
             Project: IMPALA
          Issue Type: Bug
            Reporter: Bikramjeet Vig


A user/client can set a very high value for any of the resource limits (eg. MEM_LIMIT, THREAD_RESERVATION_AGGREGATE_LIMIT, etc) which can potentially make the cluster unstable and affect other queries.
Possible solution to this problem can include restricting a user to override resource limits. However any solution would need to be scope, taking into account things like:
- capping limits at the service level and/or the resource pool level
- Effects of dynamically changing resource pools configs
- Some implementation of safety valves - to cover cases like if we want to run a query with a value outside the range, e.g. some special query that needs tuning 
- Authorisation - who is allowed to change and/or override limit



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