keep_alive | Time | The amount of time to keep the PIT. Every time you access a PIT by using the Search API, the PIT lifetime is extended by the amount of time equal to the `keep_alive` parameter. Required.
preference | String | The node or the shard used to perform the search. Optional. Default is random.
routing | String | Specifies to route search requests to a specific shard. Optional. Default is the document's `_id`.
expand_wildcards | String | The type of index that can match the wildcard pattern. Supports comma-separated values. Valid values are the following:<br>- `all`: Match any index or data stream, including hidden ones. <br>- `open`: Match open, non-hidden indexes or non-hidden data streams. <br>- `closed`: Match closed, non-hidden indexes or non-hidden data streams. <br>- `hidden`: Match hidden indexes or data streams. Must be combined with `open`, `closed` or both `open` and `closed`.<br>- `none`: No wildcard patterns are accepted.<br> Optional. Default is `open`.
pit_id | [Base64 encoded binary]({{site.url}}{{site.baseurl}}/opensearch/supported-field-types/binary) | The PIT ID.
creation_time | long | The time the PIT was created, in milliseconds since the epoch.
keep_alive | long | The amount of time to keep the PIT, in milliseconds.
## Delete PITs
Introduced 2.4
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Deletes one, several, or all PITs. PITs are automatically deleted when the `keep_alive` time period elapses. However, to deallocate resources, you can delete a PIT using the Delete PIT API. The Delete PIT API supports deleting a list of PITs by ID or deleting all PITs at once.
### Cross-cluster behavior
The Delete PITs by ID API fully supports deleting cross-cluster PITs.
The Delete All PITs API deletes only local PITs or mixed PITs (PITs created in both local and remote clusters). It does not delete fully remote PITs.
#### Sample Request: Delete all PITs
```json
DELETE /_search/point_in_time/_all
```
If you want to delete one or several PITs, specify their PIT IDs in the request body.
pit_id | [Base64 encoded binary]({{site.url}}{{site.baseurl}}/opensearch/supported-field-types/binary) or an array of binaries | The PIT IDs of the PITs to be deleted. Required.
For each PIT, the response contains a JSON object with a PIT ID and a `successful` field that specifies whether the deletion was successful. Partial failures are treated as failures.
successful | Boolean | Whether the delete operation was successful.
pit_id | [Base64 encoded binary]({{site.url}}{{site.baseurl}}/opensearch/supported-field-types/binary) | The PIT ID of the PIT to be deleted.
## PIT segments
Introduced 2.4
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Similarly to the [CAT Segments API]({{site.url}}{{site.baseurl}}/api-reference/cat/cat-segments), the PIT Segments API provides low-level information about the disk utilization of a PIT by describing its Lucene segments. The PIT Segments API supports listing segment information of a specific PIT by ID or of all PITs at once.
pit_id | [Base64 encoded binary]({{site.url}}{{site.baseurl}}/opensearch/supported-field-types/binary) or an array of binaries | The PIT IDs of the PITs whose segments are to be listed. Required.
