Joe McDonnell created IMPALA-15587:
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Summary: Detect number of CPU cores that Impala can actually run on
Key: IMPALA-15587
URL: https://issues.apache.org/jira/browse/IMPALA-15587
Project: IMPALA
Issue Type: Improvement
Components: Backend
Affects Versions: Impala 5.0.0
Reporter: Joe McDonnell
With taskset and other tools, Impalas can be bound to specific cores. The
current logic in cpu-info.cc does not detect this, but this would be useful to
know for diagnostics and running the right number of threads. We can get this
information using sched_getaffinity().
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