我在向hadoop类路径添加jar库时遇到问题。我正在使用emr label 5.31.0，并将avro-1.10.0.jar下载到/home/hadoop/lib中。我还按照说明将库附加到hadoop类路径，但没有一个有效https://docs.aws.amazon.com/emr/latest/releaseguide/emr-3x-customizeappconfig.html

# !/bin/bash
export HADOOP_USER_CLASSPATH_FIRST=true; 
echo "HADOOP_CLASSPATH=/path/to/my.jar" >> /home/hadoop/conf/hadoop-user-env.sh

[ 
      { 
         "Classification":"hadoop-env",
         "Properties":{ 
         },
         "Configurations":[ 
            { 
               "Classification":"export",
               "Properties":{ 
                  "HADOOP_USER_CLASSPATH_FIRST":"true",
                  "HADOOP_CLASSPATH":"/path/to/my.jar"
               }
            }
         ]
      }
   ]

问题是什么？