Sync from apache/kafka (8 August 2019) and upgrade avro to 1.9.0#217

Merged

Ismael Juma (ijuma) merged 7 commits into

sync-upstream-aug-8

Aug 9, 2019

Commits on Aug 6, 2019

Minor: Refactor methods to add metrics to sensor in `StreamsMetricsImpl` (#7161)

Bruno Cadonna (cadonna)
authored and
Guozhang Wang (guozhangwang)
committed
KAFKA-8736: Streams performance improvement, use isEmpty() rather than size() == 0 (#7164)

mjarvie
authored and
Matthias J. Sax (mjsax)
committed
MINOR: some small style fixes to RoundRobinPartitioner

Colin Patrick McCabe (cmccabe)
authored and
Gwen Shapira (gwenshap)
committed

Commits on Aug 7, 2019

Commits on Aug 8, 2019