Spark | 启动Spark时，出现JAVA_HOME not set报错_spark更改javahome

项目场景：

启动Spark时

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问题描述`

启动Spark时，出现JAVA_HOME not set报错：

starting org.apache.spark.deploy.master.Master, logging to /usr/local/spark/logs/spark-root-org.apache.spark.deploy.master.Master-1-master.out
localhost: starting org.apache.spark.deploy.worker.Worker, logging to /usr/local/spark/logs/spark-root-org.apache.spark.deploy.worker.Worker-1-master.out
localhost: failed to launch: nice -n 0 /usr/local/spark/bin/spark-class org.apache.spark.deploy.worker.Worker --webui-port 8081 spark://master:7077
localhost:   JAVA_HOME is not set
localhost: full log in /usr/local/spark/logs/spark-root-org.apache.spark.deploy.worker.Worker-1-master.out
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原因分析：

在spark的sbin目录下的spark-config.sh中缺少JAVA的路径设置

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解决方案：

在spark的sbin目录下的spark-config.sh中添加JDK的路径即可（自己的路径）

export JAVA_HOME=/usr/local/jdk #这里是java的pwd路径
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