New features:

• Groovy Client (#139)
• XContent – An abstraction on top of content (JSON inspired) (#152)
• Nodes Stats API (#165)
• Analysis ICU Plugin (#151)
• Add online plugin repository and a ‘plugin’ command to download them (#157)
• Cloud Plugin:
  • Allow to use the cloud as gateway storage (#163)
  • Auto Discovery on the Cloud (extending the Zen discovery) (#164)
• Mapper: Date format – allow for multiple formats using ‘||’ separator (#169)
• Memcache Plugin: Support memcached protocol (#141)
• Restart API: Allow to restart one or more nodes (#155)
• Service Wrapper: A Java Service Wrapper integration (#154)

Enhancements:

• Remove dependency on slf4j for logging, create own internal abstraction (#146)
• Add a -v flag to output version information (#128)
• Count / Delete By Query API: Add source parameter to pass the json body (#142)
• HTTP/Transport Modules: Default to not set the reuse_address setting (#131)
• Mapper:
  • Allow to define CamelCase JSON fields in mapping definitions (#133)
  • Object mapper default ‘date_formats’ to also support ‘yyyy/MM/dd HH:mm:ss’ and ‘yyyy/MM/dd’ (#159)
• Query DSL:
  • Allow for CamelCase field names (#134)
  • Custom Boost Factory Query (#161)
• REST API: Allow to provide case parameter, with camelCase to return results in CamelCasing (#162)
• Script / Service: Add ES_MIN_MEM and ES_MAX_MEM (#156)
• Search API:
  • Allow to pass the body JSON also as a parameter named ‘source’ (#140)
  • Indices Boost to apply a boost factor to each index (#143)

Bug fixes:

• Highlighting broken when query is on _all field or with prefixes (#148)
• Range filter gt is broken (#119)
• multi_field not returning for default field for certain type (#123)
• NodeBuilder.local(false) sets local to true (#168)
• Time Memory Leak: Search requests don’t eagerly clean the search context (#153)
• Transport: A failure to handle a response might cause the transport to stop working (#170)