OpenSearch/docs/reference/indices/flush.asciidoc
Shay Banon 7cc48c8e87 Flush API: remove refresh flag
Refresh flag in flush is problematic, since the shards refresh is allowed to execute on is different compared to the flush shards. In order to do flush and then refresh, they should be executed as separate APIs when needed.
closes #3689
2013-09-13 21:09:45 +02:00

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[[indices-flush]]
== Flush
The flush API allows to flush one or more indices through an API. The
flush process of an index basically frees memory from the index by
flushing data to the index storage and clearing the internal
<<index-modules-translog,transaction log>>. By
default, ElasticSearch uses memory heuristics in order to automatically
trigger flush operations as required in order to clear memory.
[source,js]
--------------------------------------------------
$ curl -XPOST 'http://localhost:9200/twitter/_flush'
--------------------------------------------------
[float]
=== Request Parameters
The flush API accepts the following request parameters:
[cols="<,<",options="header",]
|=======================================================================
|Name |Description
|=======================================================================
[float]
=== Multi Index
The flush API can be applied to more than one index with a single call,
or even on `_all` the indices.
[source,js]
--------------------------------------------------
$ curl -XPOST 'http://localhost:9200/kimchy,elasticsearch/_flush'
$ curl -XPOST 'http://localhost:9200/_flush'
--------------------------------------------------