Elasticsearch 0.19.12

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 from 0.18, 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.

Breaking changes:

  • Deprecate Experimental Snappy Support (#2459)
  • Deprecate Shared Gateway (#2458)
  • Shard Allocation: add index.routing.allocation.require…. and cluster.routing.allocation.require…. setting (#2404)

New features:

  • Indexing Slow Log (#2457)


  • Upgrade to Netty 3.5.11 (#2456)
  • Add types and stats to search slow log (#2455)
  • Upgrade to netty 3.5.10 (#2399)
  • Node Stats: Add largest thread pool count per thread pool stats (#2382)

Bug fixes:

  • Setting logger levels using cluster update settings does not work (#2428)
  • NullPointerException with prefix query (#2408)
  • Deriving the REST status code from a failure can, very rarely, cause an infinite loop (#2402)
  • Adding a type with _source or _all enabled fails, when these are disabled in index (#2394)
  • Multi Match: tie_breaker should allow for floating point value (#2397)