Preparing Spark release v2.2.1-rc1

assembly/pom.xml

common/network-common/pom.xml

common/network-shuffle/pom.xml

common/network-yarn/pom.xml

common/sketch/pom.xml

common/tags/pom.xml

common/unsafe/pom.xml

core/pom.xml

docs/_config.yml

examples/pom.xml

external/docker-integration-tests/pom.xml

external/flume-assembly/pom.xml

external/flume-sink/pom.xml

external/flume/pom.xml

external/kafka-0-10-assembly/pom.xml

external/kafka-0-10-sql/pom.xml

external/kafka-0-10/pom.xml

external/kafka-0-8-assembly/pom.xml

external/kafka-0-8/pom.xml

external/kinesis-asl-assembly/pom.xml