CAT thread pool
Introduced 1.0
The CAT thread pool operation lists the active, queued, and rejected threads of different thread pools on each node.
Endpoints
GET /_cat/thread_pool
GET /_cat/thread_pool/{thread_pool_patterns}
Query parameters
The following table lists the available query parameters. All query parameters are optional.
| Parameter | Data type | Description | Default |
|---|---|---|---|
cluster_manager_timeout | String | A timeout for connection to the cluster manager node. | N/A |
format | String | A short version of the Accept header, such as json or yaml. | N/A |
h | List | A comma-separated list of column names to display. | N/A |
help | Boolean | Returns help information. | false |
local | Boolean | Returns local information but does not retrieve the state from the cluster manager node. | false |
s | List | A comma-separated list of column names or column aliases to sort by. | N/A |
size | Integer | The multiplier in which to display values. | N/A |
v | Boolean | Enables verbose mode, which displays column headers. | false |
Example requests
The following example request gives information about thread pools on all nodes:
GET _cat/thread_pool?v
If you want to get information for more than one thread pool, separate the thread pool names with commas:
GET _cat/thread_pool/thread_pool_name_1,thread_pool_name_2,thread_pool_name_3
If you want to limit the information to a specific thread pool, add the thread pool name after your query:
GET _cat/thread_pool/<thread_pool_name>?v
Example response
node_name name active queue rejected
odfe-node2 ad-batch-task-threadpool 0 0 0
odfe-node2 ad-threadpool 0 0 0
odfe-node2 analyze 0 0 0s