0.17.1: zip / tar.gz / issues

Release Notes:

Enhancements:

• NullPointerException for invalid faceted query (#1136)
• Scan Search: Take track_scores into account, if set, return also scores per doc when scanning (#1139)

Bug fixes:

• mget doesn’t work with aliases (#1130)
• Realtime Get fails when using compression (#1131)
• IndicesExistsRequest throws IndexMissingException (#1133)
• Java client nodes using multicast discovery connect to one another (#1135)
• Analyze API: Failure to read full message over the wire (#1138)
• Network: Default (back) network.tcp.connect_timeout to 30s (#1134)