[doc]modified the spark-load doc (apache#9605)

docs/en/data-operate/import/import-way/spark-load-manual.md

@@ -627,6 +627,10 @@ If `spark_resource_path` is not set correctly. An error `file XXX/jars/spark-2x.
 
 If `yarn_client_path` is not set correctly. An error `yarn client does not exist in path: XXX/yarn-client/hadoop/bin/yarn` will be reported.
 
+* When using spark load, the `JAVA_HOME` environment variable is no set in the `hadoop-config.sh` on the yarn clinet.
+
+If the `JAVA_HOME`  environment variable is not set, the error `yarn application kill failed. app id: xxx, load job id: xxx, msg: which: no xxx/lib/yarn-client/hadoop/bin/yarn in ((null))  Error: JAVA_HOME is not set and could not be found` will be reported.
+
 ## More Help
 
 For more detailed syntax used by **Spark Load**,  you can enter `HELP SPARK LOAD` on the Mysql client command line for more help.

docs/zh-CN/data-operate/import/import-way/spark-load-manual.md

@@ -559,7 +559,7 @@ LoadFinishTime: 2019-07-27 11:50:16
 
 ## 常见问题
 
-- 使用 Spark Load 时没有在 spark 客户端的 spark-env.sh 配置 `HADOOP_CONF_DIR` 环境变量。
+- 使用 Spark Load 时没有在 spark 客户端的 `spark-env.sh` 配置 `HADOOP_CONF_DIR` 环境变量。
 
 如果 `HADOOP_CONF_DIR` 环境变量没有设置，会报 `When running with master 'yarn' either HADOOP_CONF_DIR or YARN_CONF_DIR must be set in the environment.` 错误。
 
@@ -575,6 +575,10 @@ LoadFinishTime: 2019-07-27 11:50:16
 
 如果 `yarn_client_path `没有设置正确，会报 `yarn client does not exist in path: xxx/yarn-client/hadoop/bin/yarn` 错误
 
+- 使用Spark load 时没有在 yarn 客户端的 `hadoop-config.sh` 配置 `JAVA_HOME` 环境变量。
+
+如果 `JAVA_HOME` 环境变量没有设置，会报 `yarn application kill failed. app id: xxx, load job id: xxx, msg: which: no xxx/lib/yarn-client/hadoop/bin/yarn in ((null))  Error: JAVA_HOME is not set and could not be found` 错误
+
 ## 更多帮助
 
 关于**Spark Load** 使用的更多详细语法，可以在Mysql客户端命令行下输入 `HELP SPARK LOAD` 获取更多帮助信息。