I have a HDFS data node that has reached 100% disk usage and has completely filled a disk. Some of the other data nodes in the cluster have very lo utilisation (<20%). I would like to rebalance the cluster but since the disk is at 100% it doesn't seem to be able to rebalance. How much free space do I need to have on a data node in order for HDFS to rebalance it?
The above was originally posted in the Community Help Track. On Wed May 22 03:25 UTC 2019, a member of the HCC moderation staff moved it to the Hadoop Core Track. The Community Help Track is intended for questions about using the HCC site itself.
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