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https://github.com/honeymoose/OpenSearch.git
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7a8da9daa3
Adds an open API example to the data streams docs. Also updates the existing open API docs to make them aware of data streams.
136 lines
4.3 KiB
Plaintext
136 lines
4.3 KiB
Plaintext
[[indices-open-close]]
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=== Open index API
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++++
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<titleabbrev>Open index</titleabbrev>
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++++
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Opens a closed index. For data streams, the API
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opens any closed backing indices.
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[source,console]
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--------------------------------------------------
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POST /twitter/_open
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--------------------------------------------------
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// TEST[setup:twitter]
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// TEST[s/^/POST \/twitter\/_close\n/]
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[[open-index-api-request]]
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==== {api-request-title}
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`POST /<target>/_open`
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[[open-index-api-desc]]
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==== {api-description-title}
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You can use the open index API to re-open closed indices. If the request targets
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a data stream, the request re-opens any of the stream's closed backing indices.
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// tag::closed-index[]
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A closed index is blocked for read/write operations and does not allow
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all operations that opened indices allow. It is not possible to index
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documents or to search for documents in a closed index. This allows
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closed indices to not have to maintain internal data structures for
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indexing or searching documents, resulting in a smaller overhead on
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the cluster.
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When opening or closing an index, the master is responsible for
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restarting the index shards to reflect the new state of the index.
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The shards will then go through the normal recovery process. The
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data of opened/closed indices is automatically replicated by the
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cluster to ensure that enough shard copies are safely kept around
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at all times.
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You can open and close multiple indices. An error is thrown
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if the request explicitly refers to a missing index. This behaviour can be
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disabled using the `ignore_unavailable=true` parameter.
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All indices can be opened or closed at once using `_all` as the index name
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or specifying patterns that identify them all (e.g. `*`).
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Identifying indices via wildcards or `_all` can be disabled by setting the
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`action.destructive_requires_name` flag in the config file to `true`.
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This setting can also be changed via the cluster update settings api.
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Closed indices consume a significant amount of disk-space which can cause
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problems in managed environments. Closing indices can be disabled via the cluster settings
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API by setting `cluster.indices.close.enable` to `false`. The default is `true`.
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The current write index on a data stream cannot be closed. In order to close
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the current write index, the data stream must first be
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<<rollover-data-stream-ex,rolled over>> so that a new write index is created
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and then the previous write index can be closed.
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// end::closed-index[]
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[[open-index-api-wait-for-active-shards]]
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===== Wait For active shards
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// tag::wait-for-active-shards[]
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Because opening or closing an index allocates its shards, the
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<<create-index-wait-for-active-shards,`wait_for_active_shards`>> setting on
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index creation applies to the `_open` and `_close` index actions as well.
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// end::wait-for-active-shards[]
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[[open-index-api-path-params]]
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==== {api-path-parms-title}
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`<target>`::
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(Optional, string)
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Comma-separated list or wildcard (`*`) expression of data streams, indices, and
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index aliases used to limit the request.
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+
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To target all data streams and indices, use `_all` or `*`.
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+
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To disallow use of `_all` or wildcard expressions,
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change the `action.destructive_requires_name` cluster setting to `true`.
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You can update this setting in the `elasticsearch.yml` file
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or using the <<cluster-update-settings,cluster update settings>> API.
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[[open-index-api-query-params]]
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==== {api-query-parms-title}
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=allow-no-indices]
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+
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Defaults to `true`.
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=expand-wildcards]
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+
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Defaults to `closed`.
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=index-ignore-unavailable]
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=wait_for_active_shards]
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=timeoutparms]
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[[open-index-api-example]]
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==== {api-examples-title}
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The following request re-opens a closed index named `my_index`.
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[source,console]
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--------------------------------------------------
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POST /my_index/_open
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--------------------------------------------------
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// TEST[s/^/PUT my_index\nPOST my_index\/_close\n/]
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The API returns the following response:
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[source,console-result]
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--------------------------------------------------
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{
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"acknowledged" : true,
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"shards_acknowledged" : true
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}
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--------------------------------------------------
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