hadoop将本地文件系统文件夹复制到HDFS

Question

我需要将文件夹从本地文件系统复制到HDFS.我找不到任何将文件夹(包括其所有子文件夹)移动到HDFS的示例

$ hadoop fs -copyFromLocal /home/ubuntu/Source-Folder-To-Copy HDFS-URI

Answer 1

你可以尝试:

hadoop fs -put /path/in/linux /hdfs/path

甚至

hadoop fs -copyFromLocal /path/in/linux /hdfs/path

在默认情况下都put与copyFromLocal将上传目录递归到HDFS.

Answer 2

如果从本地复制文件夹,则会将包含其所有子文件夹的文件夹复制到HDFS.

要将文件夹从本地复制到hdfs,您可以使用

hadoop fs -put localpath

要么

hadoop fs -copyFromLocal localpath

要么

hadoop fs -put localpath hdfspath

要么

hadoop fs -copyFromLocal localpath hdfspath

注意:

如果未指定hdfs path,则文件夹副本将复制到具有该文件夹相同名称的hdfs.

从hdfs复制到本地

 hadoop fs -get hdfspath localpath

Answer 3

简而言之

hdfs dfs -put <localsrc> <dest>

详细举例:

在将文件放入HDFS之前检查源和目标

[cloudera@quickstart ~]$ ll files/
total 132
-rwxrwxr-x 1 cloudera cloudera  5387 Nov 14 06:33 cloudera-manager
-rwxrwxr-x 1 cloudera cloudera  9964 Nov 14 06:33 cm_api.py
-rw-rw-r-- 1 cloudera cloudera   664 Nov 14 06:33 derby.log
-rw-rw-r-- 1 cloudera cloudera 53655 Nov 14 06:33 enterprise-deployment.json
-rw-rw-r-- 1 cloudera cloudera 50515 Nov 14 06:33 express-deployment.json

[cloudera@quickstart ~]$ hdfs dfs -ls
Found 1 items
drwxr-xr-x   - cloudera cloudera          0 2017-11-14 00:45 .sparkStaging

使用-put或-copyFromLocal命令复制文件HDFS

[cloudera@quickstart ~]$ hdfs dfs -put files/ files

验证HDFS中的结果

[cloudera@quickstart ~]$ hdfs dfs -ls
Found 2 items
drwxr-xr-x   - cloudera cloudera          0 2017-11-14 00:45 .sparkStaging
drwxr-xr-x   - cloudera cloudera          0 2017-11-14 06:34 files

[cloudera@quickstart ~]$ hdfs dfs -ls files
Found 5 items
-rw-r--r--   1 cloudera cloudera       5387 2017-11-14 06:34 files/cloudera-manager
-rw-r--r--   1 cloudera cloudera       9964 2017-11-14 06:34 files/cm_api.py
-rw-r--r--   1 cloudera cloudera        664 2017-11-14 06:34 files/derby.log
-rw-r--r--   1 cloudera cloudera      53655 2017-11-14 06:34 files/enterprise-deployment.json
-rw-r--r--   1 cloudera cloudera      50515 2017-11-14 06:34 files/express-deployment.json