[jira] [Commented] (CASSANDRA-9018) Dropped keyspace is not collected

["Philip Thompson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-9018?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14376591#comment-14376591 ] 

Philip Thompson commented on CASSANDRA-9018:
--------------------------------------------

What version are you using? Are you sure the data files are not just being kept around in snapshot form, or were incrementally backed up? 

> Dropped keyspace is not collected
> ---------------------------------
>
>                 Key: CASSANDRA-9018
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9018
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Maxim Podkolzine
>         Attachments: cassandra-log.zip
>
>
> As far as I understand when a keyspace is dropped, the data is marked as tombstone. We expect that after the grace period (all tables are created with gc_grace_seconds=7200), this data is automatically removed during the compaction process, which means that keyspace no longer takes any space on disk.
> This is not happening (not after 2 or 24 hours). The log keeps saying "No files to compact for user defined compaction", keyspace files remain on disk. It's not clear whether Cassandra is still waiting for certain event, or decided not to collect the data.
> Is there any setting that I missed? Any clues to figure out from the log, what's the current state.



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