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I've changed replication factor from 3 to 2 for some directories with command:

hdfs dfs -setrep -R 2 /path/to/dir

but my HDFS free space still the same. Should I do something else to free my disks?

John Brown
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1 Answers1

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Changing replication factor don't affect existing blocks stored on HDFS. so that is expected. If possible you can delete and re-load the data to satisfy your needs, However, its recommended to have replication factor of at least 3.

Mehraj Patel
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  • I found out that "dfs -setrep" changed replication factor of existing files, I just needed to wait some time and restart data nodes – John Brown Oct 05 '20 at 14:46