然后,我们使用Path对象指定了HDFS中的输入路径。接下来,我们使用fs.exists(inputPath)方法检查输入路径是否存在。如果输入路径不存在,我们输出错误信息并退出程序。 通过这种方式,我们可以确保正确使用HDFS中的输入路径,避免出现"input path does not exist"的错误。 结论 在使用Hadoop运行jar包时,正确指定输入路径是非常...
// check that the home setting is actually a directory that exists File homedir = new File(home);if (!homedir.isAbsolute() || !homedir.exists() || !homedir.isDirectory()) { throw new IOException("Hadoop home directory " + homedir + " does not exist, is not a directory, ...
if(exists){System.out.println("The path exists.");}else{System.out.println("The path does not exist.");} 1. 2. 3. 4. 5. 完整代码示例 importorg.apache.hadoop.conf.Configuration;importorg.apache.hadoop.fs.FileSystem;importorg.apache.hadoop.fs.Path;publicclassCheckPath{publicstaticvoidmain...
// check that the home setting is actually a directory that exists File homedir = new File(home); if (!homedir.isAbsolute() || !homedir.exists() || !homedir.isDirectory()) { throw new IOException("Hadoop home directory " + homedir + " does not exist, is not a directory, or is no...
fname=$(basename $file)ssh $host"mkdir -p $pdir"rsync-av $pdir/$fname $host:$pdirelseecho $file does not exists!fi done done (b)修改脚本 xsync 具有执行权限 代码语言:javascript 复制 [atguigu@hadoop102 bin]$ chmod+x xsync (c)测试脚本 ...
Hadoop运行模式(一)、本地运行模式(官方WordCount)、完全分布式运行模式(开发重点)、scp安全拷贝、rsync 远程同步工具、xsync集群分发脚本、同步环境变量配置(root所有着)
Hive服务器端日志显示“File does not exist”异常 现象: 在HiveServer服务正常的情况下,开启Hive本地模式,对HiveoverHBase表(数据存于HBase的表)进行操作(如查询),Hive客户端显示执行错误,同时Hive服务器端的子进程日志显示“File does not exist”异常。 Hive客户端执行错误,具体信息如下: ...
Exception in thread "main" org.apache.hadoop.mapreduce.lib.input.InvalidInputException:Input path does not exist: hdfs://localhost:9000/user/wu/in 解决方法: hadoop处理的文件都是在hdfs中,所以必须把要处理的文件复制到hadoop 某个文件夹中。
self.assertEqual(self.fs.du('hdfs:///more/data3'),4)deftest_du_non_existent(self):self.assertEqual(self.fs.du('hdfs:///does-not-exist'),0)deftest_exists_no(self):path ='hdfs:///f'self.assertEqual(self.fs.exists(path),False)deftest_exists_yes(self):self.make_mock_file('f'...
Important: A load Hadoop operation does not automatically generate column values when a table is partitioned by a partition-expression. When using the LOAD HADOOP statement on a table that is partitioned by a partition-expression, ensure that the column values are generated in advance and stored...