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<h2 class="title"><a id="_batch_processing"></a>Batch Processing<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/2.1/docs/reference/getting-started.asciidoc">edit</a></h2>
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<p>In addition to being able to index, update, and delete individual documents, Elasticsearch also provides the ability to perform any of the above operations in batches using the <a class="xref" href="docs-bulk.html" title="Bulk API"><code class="literal">_bulk</code> API</a>. This functionality is important in that it provides a very efficient mechanism to do multiple operations as fast as possible with as little network roundtrips as possible.</p>
<p>As a quick example, the following call indexes two documents (ID 1 - John Doe and ID 2 - Jane Doe) in one bulk operation:</p>
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<pre class="programlisting prettyprint lang-sh">curl -XPOST 'localhost:9200/customer/external/_bulk?pretty' -d '
{"index":{"_id":"1"}}
{"name": "John Doe" }
{"index":{"_id":"2"}}
{"name": "Jane Doe" }
'</pre>
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<p>This example updates the first document (ID of 1) and then deletes the second document (ID of 2) in one bulk operation:</p>
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<pre class="programlisting prettyprint lang-sh">curl -XPOST 'localhost:9200/customer/external/_bulk?pretty' -d '
{"update":{"_id":"1"}}
{"doc": { "name": "John Doe becomes Jane Doe" } }
{"delete":{"_id":"2"}}
'</pre>
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<p>Note above that for the delete action, there is no corresponding source document after it since deletes only require the ID of the document to be deleted.</p>
<p>The bulk API executes all the actions sequentially and in order. If a single action fails for whatever reason, it will continue to process the remainder of the actions after it. When the bulk API returns, it will provide a status for each action (in the same order it was sent in) so that you can check if a specific action failed or not.</p>
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