运行kylin，kafka任务报错：
Failure task Diagnostics:
Error: :
at (:381)
at (:424)
at $(:349)
at (:357)
at (:107)
at $NewTrackingRecordReader.<init>(:521)
at (:764)
at (:341)
at $(:164)
at (Native Method)
at (:422)
at (:1920)
at (:158)
at (:173)
at (:167)
... 6 more
解决办法设置
在/etc/profile中设置：
export KAFKA_HOME=/opt/kylin/kafka_2.12-2.1.0
环境变量生效，然后重启kylin
source /etc/profile