Kafka：ZK+Kafka+Spark Streaming集群環境搭建（四）針對hadoop2.9.0啟動執行start-all.sh出現異常：failed to launch: nice -n 0 /bin/spark-class org.apache.spark.deploy.worker.Worker

啟動問題：

執行start-all.sh出現以下異常信息：

failed to launch: nice -n 0 /bin/spark-class org.apache.spark.deploy.worker.Worker --webui-port 8081 spark://master:7077

解決方案：

Just added export JAVA_HOME=/usr/java/default in /root/.bashrc

su root
vi /root/.bashrc
export JAVA_HOME=/opt/jdk1.8.0_171

之后嘗試重新啟動hadoop。

參考《https://blog.csdn.net/Abandon_Sun/article/details/76686398》
《https://stackoverflow.com/questions/33955635/why-does-start-all-sh-from-root-cause-failed-to-launch-org-apache-spark-deploy》