sparkSQL连接报错的一个解决方法

在一个报错启动时出现，用tail -f /opt/installs/anaconda3/lib/python3.8/site-packages/pyspark/logs/spark-root-org.apache.spark.sql.hive.thriftserver.HiveThriftServer2-1-bigdata01.out命令查看了启动的日志文件出现这个错误：

复制代码

false org.apache.spark.deploy.SparkSubmit --master yarn --conf spark.sql.shuffle.partitions=2 --class org.apache.spark.sql.hive.thriftserver.HiveThriftServer2 --name Thrift JDBC/ODBC Server spark-internal --hiveconf hive.server2.thrift.port=10001 --hiveconf hive.server2.thrift.bind.host=bigdata01
========================================
Exception in thread "main" org.apache.spark.SparkException: When running with master 'yarn' either HADOOP_CONF_DIR or YARN_CONF_DIR must be set in the environment.
    at org.apache.spark.deploy.SparkSubmitArguments.error(SparkSubmitArguments.scala:650)
    at org.apache.spark.deploy.SparkSubmitArguments.validateSubmitArguments(SparkSubmitArguments.scala:281)
    at org.apache.spark.deploy.SparkSubmitArguments.validateArguments(SparkSubmitArguments.scala:237)
    at org.apache.spark.deploy.SparkSubmitArguments.<init>(SparkSubmitArguments.scala:122)
    at org.apache.spark.deploy.SparkSubmit$$anon$2$$anon$3.<init>(SparkSubmit.scala:1108)
    at org.apache.spark.deploy.SparkSubmit$$anon$2.parseArguments(SparkSubmit.scala:1108)
    at org.apache.spark.deploy.SparkSubmit.doSubmit(SparkSubmit.scala:86)
    at org.apache.spark.deploy.SparkSubmit$$anon$2.doSubmit(SparkSubmit.scala:1125)
    at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:1134)
    at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)

对文档中的路径进行配置：

export HADOOP_CONF_DIR=/opt/installs/hadoop/etc/hadoop

export YARN_CONF_DIR=/opt/installs/hadoop/etc/hadoop

然后启动发现另一个错误

说是当时集群出现了没有离开安全模式的命令，

hdfs dfsadmin -safemode leave

先离开安全模式，然后开启三个集群并且启动命令，重启spark：

spark-service-manager.sh stop

spark-service-manager.sh start