Ambari User's Guide
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How to rebalance HDFS

This topic describes how you can initiate an HDFS rebalance from Ambari.

  1. . In Ambari Web, browse to Services > HDFS > Summary.

  2. Select Service Actions, then choose Rebalance HDFS.

  3. Enter the Balance Threshold value as a percentage of disk capacity.

  4. Click Start to begin the rebalance.

  5. You can check rebalance progress or cancel a rebalance in process by opening the Background Operations dialog.