Reinstate missing documentation (#28781)
The documentation for settings index.routing.allocation.enable,
index.routing.rebalance.enable and index.gc_deletes was lost in
f123a53d72
. This change reinstates it.
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@ -39,11 +39,14 @@ The result of the above delete operation is:
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[[delete-versioning]]
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=== Versioning
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Each document indexed is versioned. When deleting a document, the
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`version` can be specified to make sure the relevant document we are
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trying to delete is actually being deleted and it has not changed in the
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meantime. Every write operation executed on a document, deletes included,
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causes its version to be incremented.
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Each document indexed is versioned. When deleting a document, the `version` can
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be specified to make sure the relevant document we are trying to delete is
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actually being deleted and it has not changed in the meantime. Every write
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operation executed on a document, deletes included, causes its version to be
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incremented. The version number of a deleted document remains available for a
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short time after deletion to allow for control of concurrent operations. The
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length of time for which a deleted document's version remains available is
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determined by the `index.gc_deletes` index setting and defaults to 60 seconds.
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[float]
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[[delete-routing]]
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@ -214,6 +214,27 @@ specific index module:
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The maximum length of regex that can be used in Regexp Query.
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Defaults to `1000`.
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`index.routing.allocation.enable`::
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Controls shard allocation for this index. It can be set to:
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* `all` (default) - Allows shard allocation for all shards.
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* `primaries` - Allows shard allocation only for primary shards.
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* `new_primaries` - Allows shard allocation only for newly-created primary shards.
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* `none` - No shard allocation is allowed.
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`index.routing.rebalance.enable`::
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Enables shard rebalancing for this index. It can be set to:
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* `all` (default) - Allows shard rebalancing for all shards.
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* `primaries` - Allows shard rebalancing only for primary shards.
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* `replicas` - Allows shard rebalancing only for replica shards.
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* `none` - No shard rebalancing is allowed.
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`index.gc_deletes`::
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The length of time that a <<delete-versioning,deleted document's version number>> remains available for <<index-versioning,further versioned operations>>.
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Defaults to `60s`.
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[float]
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=== Settings in other index modules
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