Michael McCandless 242e631e95 Core: ignore known idle threads by default in /_nodes/hot_threads
Add a new ignore_idle_threads boolean option (default true) to
/_nodes/hot_threads, to filter out threads in known idle places like
waiting on a socket select or on pulling the next task from an empty
queue.

Closes #8985

Closes #8908
2014-12-17 11:59:31 -05:00
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