https://hadoop.apache.org/docs/r2.8.2/hadoop-project-dist/hadoop-common/api/org/apache/hadoop/service/LifecycleEvent.html
LifecycleEvent (Apache Hadoop Common 2.8.2 API)
apache hadooplifecycleeventcommonapi
https://hadoop.apache.org/docs/r2.6.4/api/org/apache/hadoop/service/class-use/LifecycleEvent.html
Uses of Class org.apache.hadoop.service.LifecycleEvent (Apache Hadoop Main 2.6.4 API)