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Release Notes
Upgrade Notes:
Upgrading from 0.18 requires issuing a full flush of all the indices in the cluster (curl host:9200/_flush
) before shutting down the cluster, with no indexing operations happening after the flush.
The local gateway state structure has changed, a backup of the state files is created when upgrading, they can then be used to downgrade back to 0.18. Don’t downgrade without using them.
New features:
Store Throttling (node level and/or index level) with options on merge or all (#2041 )
Stored Fields Compression (#2037 )
Store Compression: Term Vector Vector (#2049 )
Enhancements:
Return 503 when threadpool limit is reached (#2048 )
Allow to pass es.default. settings to the process, using it as default value unless specified in the config file (#2016 )
Allow to filter client and “just” data nodes from controlling elected master (default client to true) (#2014 )
Upgrade to Netty 3.5.0.Final (#2013 )
Init script in Debian package ignores some options in elasticsearch.yml (#1765 )
Index level allocation filtering: Add _host option (#1991 )
Multi Search API : Allow to set search_type on REST endpoint URI to apply to all search requests (#2023 )
Query DSL :
Add more fuzzy options in different queries (text, query_string/field) (#1974 )
Add max_boost to custom_filters_score to cap boosting (#1973 )
term/terms filter performance improvement (bulk reading) (#1972 )
text query to support minimum_should_match (#1971 )
Add null_value and existence to missing filter, filtering both null values and missing fields (#1970 )
Rest API : Add HEAD
support for /{index}/{type}/{id}
to quickly check if doc exists or not (#2047 )
Bug fixes:
Failure to recover properly on node(s) restart (#2046 )
Improve cluster resiliency to disconnected sub clusters + fix a shard allocation bug with quick rolling restarts (#2042 )
fix bug index.ttl.disable_purge should be in IndexMetaData (#2020 )
.DS_Store file in .deb package (#2017 )
Quoted query_string gives NullPointerException with not_analyzed field (0.19.4) (#2006 )
TransportClient does not load plugins (#1982 )
Get mapping with no index specified on an empty cluster returns 404 (#1976 )
River name re-use not possible between node shutdowns (#1921 )