#hadoop command

[amalgjose]

How to execute Hadoop commands in hive shell or command line interface ?

How to execute Hadoop commands in hive shell or command line interface ?

We can execute hadoop commands in hive cli. It is very simple. Just put an exclamation mark (!) before your hadoop command in hive cli and put a semicolon (;) after your command. Example: hive> !hadoop fs –ls / ; drwxr-xr-x   - hdfs supergroup          0 2013-03-20 12:44 /app drwxrwxrwx   - hdfs supergroup          0 2013-05-23 11:54 /tmp drwxr-xr-x   - hdfs supergroup          0 2013-05-08…

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[learn4master-blog]

Most popular hadoop commands

Most popular hadoop commands

Here is a list of the most popular hdfs or hadoop commands to manage your hdfs files.  List the files in a hdfs directory hadoop fs -ls hdfs_path hdfs dfs -ls hdfs_path Hadoop Create Directory  hadoop fs -mkdir hdfs://user/new_foder/ Hadoop Create a directory tree hadoop fs -mkdir -p  hdfs://user/new_foder/new_subfolder/ Hadoop copy hdfs files hadoop fs -cp source_hdfs_path target_hdfs_path cp…

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[learn4master-blog]

Run hadoop command in Python

Run hadoop command in Python

Hadoop is the most widely used big data platform for big data analysis. It is easy to run Hadoop command in Shell or a shell script. However, there is often a need to manipulate hadoop hdfs files directly from python. We use examples to describe how to run hadoop command in python to list, and copyFromlocal hdfs files. We already know how to call an extern shell command from python. We can simply…

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