If you have one snapshot of all your sstables and then you do a major compaction, your disk space will double. So that is what is causing your disk space to go up. Not the snapshot after the major compaction.
Snapshot to NFS resource - it is possible
(22 posts) (3 voices)- Started 6 months ago by matteraf
- Latest reply from nickmbailey
- This topic is not a support question
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Posted 5 months ago #
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No, that is correct. After minor compactions cassandra will delete the old sstables that were compacted into a new sstable. If you have snapshots, deleting those files won't actually free any disk space since they still exist in the snapshots directory.
Posted 5 months ago # -
You've lost me. The only thing that generates files in the snapshots directory is running the snapshot command. That creates hard links to all live sstables.
Posted 5 months ago # -
Kind of. Cassandra will have deleted the original pointer to the file, leaving only the snapshot pointer to the file if that is what you mean. I would recommend reading http://en.wikipedia.org/wiki/Hard_link
Posted 5 months ago #
