Assuming your total disk space is a lot bigger than 50GB in size (accounting for disk space amplification, commit log, logs, OS data, etc.), I would suspect the disk space is being used by something else. Have you checked that the disk space is actually being used by the cassandra data directory? If so, have a look at 'nodetool listsnapshots' command output as well.

On 17/09/2021 05:48, Abdul Patel wrote:
Hello

We have cassandra with leveledcompaction strategy, recently found filesystem almost 90% full but the data was only 10m records. Manual compaction will work? As not sure its recommended and space is also constraint ..tried removing and adding one node and now data is at 20GB which looks appropropiate.
So is only solution to reclaim space is remove/add node?

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