Elijah Zupancic created DRILL-5918:
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Summary: Allow manual configuration when using
Runtime.getRuntime().availableProcessors()
Key: DRILL-5918
URL: https://issues.apache.org/jira/browse/DRILL-5918
Project: Apache Drill
Issue Type: Improvement
Affects Versions: 1.11.0
Reporter: Elijah Zupancic
Priority: Critical
Currently Drill auto-configures the number of threads in various thread pools
based on the processor count:
https://github.com/apache/drill/blob/master/exec/java-exec/src/main/java/org/apache/drill/exec/server/BootStrapContext.java#L110
https://github.com/apache/drill/blob/master/exec/java-exec/src/main/java/org/apache/drill/exec/server/options/TypeValidators.java#L269
https://github.com/apache/drill/blob/master/exec/java-exec/src/main/java/org/apache/drill/exec/work/foreman/rm/AbstractResourceManager.java#L55
https://github.com/apache/drill/blob/master/exec/java-exec/src/main/java/org/apache/drill/exec/work/foreman/rm/DefaultResourceManager.java#L99
In a number of situations, this configuration is incorrect. In particular, the
settings aren't correct when [running in a bare-metal
container](https://docs.google.com/document/d/1WGPGiJtbJZPZBMSD9YHAAz-O4AlAET9qOnS_GeriZtE/edit?usp=sharing)
because you don't necessarily have access to all of the compute shares or
memory of the underlying host.
Ideally, the number of CPUs to use could be specified as a system parameter to
Drill. This would allow users to configure Drill to their optimal settings.
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