0.19.9: zip / tar.gz / issues

Release 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.

Introduce Text abstraction, allowing for improved representation of strings, apply to HighlightedField (breaks backward for Java API from String to Text) (#2093)
Stored binary fields to change internal representation (break Java API if used) (#2092)

Reduce index.shard.recovery.concurrent_streams from 5 to 3 to reduce the load when doing recovery (#2198)
Upgrade to netty 3.5.5 (#2196)
MinimumNumberShouldMatch inconcistency (#2194)
Upgrade to Netty 3.5.4 (#2180)
Rename text query to match query (text query still works, with variants) (#2150)
word_delimiter token filter does not honor “type_table” option. (#2145)
Improve recovery time when processing large mappings (#2138)
Increase default recovery chunk size (#2125)
Upgrade to Netty 3.5.3 (#2119)
ShingleTokenFilterFactory doesn’t expose all relevant settings (#2116)
Upgrade to Lucene 3.6.1 (#2110)
Upgrade to Netty 3.5.2 (#2084)
All Field: Automatically detect when field level boosting is used, and optimize when its not (#2189)
Mapping:
- String type to allow for a “ignore_above” size parameter, above which it will ignore the content (#2121)
- Numeric/Date types to have a flag to ignore wrongly formatted values (#2120)
Node Stats: Add jvm buffer pools stats (when available, for java 7 and above) (#2122)
Thread Pool: Allow to configure the queue_type for fixed thread pool (linked/array), defaults to array (#2086)
Transport/Http: Remove explicit setting of send/receive buffer, and improve netty receive buffer predictor (#2124)

Incorrect application of boost in SpanNotQueryBuilder (#2192)
Date Histogram facet fails with “pre_zone” : “+02:00” (#2141)
Local Gateway: old global state files are not properly deleted (#2085)
Update API: Update through an alias with routing configured on it fail to use the routing (#2155)