opensearch-docs-cn/_search-plugins/async/settings.md

layout	title	parent	grand_parent	nav_order
default	Settings	Asynchronous search	Improving search performance	4

Asynchronous Search settings

The Asynchronous Search plugin adds several settings to the standard OpenSearch cluster settings. They are dynamic, so you can change the default behavior of the plugin without restarting your cluster. To learn more about static and dynamic settings, see Configuring OpenSearch.

You can mark the settings as persistent or transient.

For example, to update the retention period of the result index:

PUT _cluster/settings
{
  "transient": {
    "plugins.asynchronous_search.max_wait_for_completion_timeout": "5m"
  }
}

Setting	Default	Description
plugins.asynchronous_search.max_search_running_time	12 hours	The maximum running time for the search beyond which the search is terminated.
plugins.asynchronous_search.node_concurrent_running_searches	20	The concurrent searches running per coordinator node.
plugins.asynchronous_search.max_keep_alive	5 days	The maximum amount of time that search results can be stored in the cluster.
plugins.asynchronous_search.max_wait_for_completion_timeout	1 minute	The maximum value for the wait_for_completion_timeout parameter.
plugins.asynchronous_search.persist_search_failures	false	Persist asynchronous search results that end with a search failure in the system index.