文章浏览阅读3.5k次,点赞3次,收藏11次。在Hadoop平台搭建过程中,已经生成了公钥和私钥。但是启动start-dfs.sh时出现以下:[root@master sbin]# start-dfs.shStarting namenodes on [master]The authenticity of host 'master (192.168.80.5)' can't be established.ECDSA......
文章浏览阅读497次。java.io.FileNotFoundException: /tmp/Jetty_0_0_0_0_43554_mapreduce____ljbmlg/webapp/webapps/mapreduce/.keep (No such file or directory)原因是nodemanager所在机器的/tmp目录的权限是755,而不是777执行如下命令即可:chmod -R 777 tmp..._/tmp/jetty-0_0_0_0-......
文章浏览阅读4.5k次。1、Exception in thread "main" java.lang.Exception: When running with master 'yarn' either HADOOP_CONF_DIR or YARN_CONF_DIR must be set in the environment. at org.apache.spark.deploy.SparkSubm..._spark报exception in thread "main" java.lang.ex......