66 lines
1.4 KiB
Plaintext
66 lines
1.4 KiB
Plaintext
[[breaking-changes-3.0]]
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== Breaking changes in 3.0
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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 3.0.
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=== Search changes
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==== `search_type=count` removed
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The `count` search type was deprecated since version 2.0.0 and is now removed.
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In order to get the same benefits, you just need to set the value of the `size`
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parameter to `0`.
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For instance, the following request:
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[source,sh]
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---------------
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GET /my_index/_search?search_type=count
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{
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"aggs": {
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"my_terms": {
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"terms": {
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"field": "foo"
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}
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}
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}
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}
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---------------
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can be replaced with:
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[source,sh]
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---------------
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GET /my_index/_search
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{
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"size": 0,
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"aggs": {
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"my_terms": {
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"terms": {
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"field": "foo"
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}
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}
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}
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}
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---------------
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==== `search_type=scan` removed
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The `scan` search type was deprecated since version 2.1.0 and is now removed.
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All benefits from this search type can now be achieved by doing a scroll
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request that sorts documents in `_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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characteristics as the former `scan` search type.
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