HDFS Cheat Sheet

Tim Spann has produced a guide for HDFS shell commands:

There are number of commands that you may need to use for administrating your cluster if you are one of the administrators for your cluster.   If you are running your own personal cluster or Sandbox, these are also good to know and try. Do Not Try These In Production if you are not the owner and fully understand the dire consequences of these actions.   These commands will be affecting the entire Hadoop cluster distributed file system.  You can shutdown data nodes, add quotas to directories for various users and other administrative features.

Many of the commands in this list should be familiar if you know much about Linux or Unix administration, but there are some Hadoop-specific commands as well, like moveFromLocal and moveToLocal.

Related Posts

Don’t Set Max Size For Containers In In-Memory OLTP

Ned Otter recommends you not mess with the maximum container size when creating a memory-optimized filegroup: I recently saw a thread on twitter, where the OP talked about setting the max size for an In-Memory OLTP container. I responded as I always do: it’s not possible to set a limit on anything having to do […]

Read More

Building TensorFlow Neural Networks On Spark With Keras

Jules Damji has an example of using the PyCharm IDE to use Keras to build TensorFlow neural network models on the Databricks MLflow library: Our example in the video is a simple Keras network, modified from Keras Model Examples, that creates a simple multi-layer binary classification model with a couple of hidden and dropout layers and […]

Read More


November 2016
« Oct Dec »