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Cloudera Manager reports that disks are full on some nodes of my Hadoop cluster but, checking manually the free space with df -h, every disk is almost half-empty.

Is it a bug or I need to issue some other commands to check the actual free space ? What command is Cloudera Manager using when doing health check ?

Nicola Ferraro
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1 Answers1

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I solved the problem. The property dfs.datanode.du.reservedwas set to 100GB, so Hadoop could not use that amount of space (for each volume) for storing new HDFS blocks.

Nicola Ferraro
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