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Posted to issues@impala.apache.org by "Joe McDonnell (Jira)" <ji...@apache.org> on 2026/10/19 23:38:00 UTC

[jira] [Created] (IMPALA-15587) Detect number of CPU cores that Impala can actually run on

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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