Andrew Sherman created IMPALA-13596:
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Summary: Verify Admission Control configuration at startup
Key: IMPALA-13596
URL: https://issues.apache.org/jira/browse/IMPALA-13596
Project: IMPALA
Issue Type: Bug
Affects Versions: Impala 4.4.0
Reporter: Andrew Sherman
Assignee: Andrew Sherman
The Admission Control configuration is split across the two files
-fair_scheduler_allocation_path=fair-scheduler.xml
-llama_site_path=llama-site.xml
We lazily load the configuration for a pool when a query is submitted to that
pool. This is probably not a good time to fail the server.
In addition a possibly dangerous configuration for a pool in the XML files
might never actually be used.
Add a configuration verification step at server startup. This will log warning
messages if there is an inconsistency in the configuration.
There could be multiple checks, for example we could flag if a Root level User
Quota value is less than a pool level User Quota.
We could also detect duplicate entries in the configuration.
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