2015-08-19 10:43:50 -04:00
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[[breaking-changes-2.1]]
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== Breaking changes in 2.1
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This section discusses the changes that you need to be aware of when migrating
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your application to Elasticsearch 2.1.
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=== Search changes
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==== `search_type=scan` deprecated
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The `scan` search type has been deprecated. All benefits from this search
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type can now be achieved by doing a scroll request that sorts documents in
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`_doc` order, for instance:
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[source,sh]
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---------------
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GET /my_index/_search?scroll=2m
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{
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"sort": [
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"_doc"
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]
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}
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---------------
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Scroll requests sorted by `_doc` have been optimized to more efficiently resume
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from where the previous request stopped, so this will have the same performance
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2015-08-22 04:39:18 -04:00
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characteristics as the former `scan` search type.
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