[jira] [Created] (ARROW-2479) [C++] Have a global thread pool
Antoine Pitrou created ARROW-2479:
Summary: [C++] Have a global thread pool
Project: Apache Arrow
Issue Type: Wish
Reporter: Antoine Pitrou
A few parts of Arrow have started spawning threads to parallelize CPU-bound tasks. They do so by launching a hard-coded number of threads, disregarding machine configuration or the fact that Arrow itself might be used from several threads at once (so hardcoding 8 threads might end up launch N * 8 threads if the user is calling Arrow from N threads at once...).
Instead we probably want a global thread pool policy, with a singleton thread pool for CPU-bound tasks (using, by default, a number of threads equal to the machine's capacity).
See discussion in [https://github.com/apache/arrow/pull/1893]
This message was sent by Atlassian JIRA