该 API 可以获取当前集群中每一个节点的 hot threads（热点线程）。Endpoints（端点）是 /_nodes/hot_threads 和**/_nodes/{nodesIds}/hot_threads**。
该输出是每一个节点的 host threads 的崩溃的纯文本。允许的参数是 :
| 参数 | 描述 |
|---|---|
threads |
number of hot threads to provide, defaults to 3. |
interval |
the interval to do the second sampling of threads. Defaults to 500ms. |
type |
The type to sample, defaults to cpu, but supports wait and block to see hot threads that are in wait or block state. |
ignore_idle_threads |
If true, known idle threads (e.g. waiting in a socket select, or to get a task from an empty queue) are filtered out. Defaults to true. |