93 lines
3.5 KiB
Plaintext
93 lines
3.5 KiB
Plaintext
[[breaking-changes-1.4]]
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== Breaking changes in 1.4
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This section discusses the changes that you need to be aware of when migrating
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your application from Elasticsearch 1.x to Elasticsearch 1.4.
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[float]
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=== Percolator
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In indices created with version `1.4.0` or later, percolation queries can only
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refer to fields that already exist in the mappings in that index. There are
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two ways to make sure that a field mapping exist:
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* Add or update a mapping via the <<indices-create-index,create index>> or
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<<indices-put-mapping,put mapping>> apis.
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* Percolate a document before registering a query. Percolating a document can
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add field mappings dynamically, in the same way as happens when indexing a
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document.
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[float]
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=== Aliases
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<<indices-aliases,Aliases>> can include <<query-dsl,filters>> which
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are automatically applied to any search performed via the alias.
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<<filtered,Filtered aliases>> created with version `1.4.0` or later can only
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refer to field names which exist in the mappings of the index (or indices)
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pointed to by the alias.
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Add or update a mapping via the <<indices-create-index,create index>> or
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<<indices-put-mapping,put mapping>> apis.
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[float]
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=== Indices APIs
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The <<warmer-retrieving, get warmer api>> will return a section for `warmers` even if there are
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no warmers. This ensures that the following two examples are equivalent:
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[source,js]
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--------------------------------------------------
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curl -XGET 'http://localhost:9200/_all/_warmers'
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curl -XGET 'http://localhost:9200/_warmers'
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--------------------------------------------------
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The <<alias-retrieving, get alias api>> will return a section for `aliases` even if there are
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no aliases. This ensures that the following two examples are equivalent:
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[source,js]
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--------------------------------------------------
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curl -XGET 'http://localhost:9200/_all/_aliases'
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curl -XGET 'http://localhost:9200/_aliases'
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--------------------------------------------------
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The <<indices-get-mapping, get mapping api>> will return a section for `mappings` even if there are
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no mappings. This ensures that the following two examples are equivalent:
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[source,js]
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--------------------------------------------------
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curl -XGET 'http://localhost:9200/_all/_mappings'
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curl -XGET 'http://localhost:9200/_mappings'
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--------------------------------------------------
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[float]
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=== Bulk UDP
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Bulk UDP has been deprecated and will be removed in 2.0.
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You should use <<docs-bulk,the standard bulk API>> instead.
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Each cluster must have an elected master node in order to be fully operational. Once a node loses its elected master
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node it will reject some or all operations.
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[float]
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=== Zen discovery
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On versions before `1.4.0.Beta1` all operations are rejected when a node loses its elected master. From `1.4.0.Beta1`
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only write operations will be rejected by default. Read operations will still be served based on the information available
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to the node, which may result in being partial and possibly also stale. If the default is undesired then the
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pre `1.4.0.Beta1` behaviour can be enabled, see: <<modules-discovery-zen,no-master-block>>
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[float]
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=== More Like This Field
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The More Like This Field query has been deprecated in favor of the <<query-dsl-mlt-query, More Like This Query>>
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restrained set to a specific `field`. It will be removed in 2.0.
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[float]
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=== MVEL is deprecated
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Groovy is the new default scripting language in Elasticsearch, and is enabled in `sandbox` mode
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by default. MVEL has been removed from core, but is available as a plugin:
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https://github.com/elasticsearch/elasticsearch-lang-mvel
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