Hi Json,
I'm not familiar enough with Cassandra 3, but it might be snapshots.
Snapshots are usually hardlinks to sstable directories.
Try this :
nodetool clearsnapshot
Does it change anything?
--
Nicolas
Le sam. 8 oct. 2016 à 21:26, Jason Kania <jason.ka...@ymail.com> a écrit :
> Hi Vladamir,
>
> Thanks for the response. I assume then that it is safe to remove the
> directories that are not current as per the system_schema.tables table. I
> have dozens of the same table and haven't dropped and added nearly that
> many times. Do any of the nodetool or other commands clean up these unused
> directories?
>
> Thanks,
>
> Jason Kania
>
> ------------------------------
> *From:* Vladimir Yudovin <vla...@winguzone.com>
> *To:* user@cassandra.apache.org; Jason Kania <jason.ka...@ymail.com>
> *Sent:* Saturday, October 8, 2016 2:05 PM
> *Subject:* Re: Understanding cassandra data directory contents
>
> Each table has unique id (suffix). If you drop and then recreate table
> with the same name it gets new id.
>
> Try
> *SELECT keyspace_name, table_name, id FROM system_schema.tables ;*
> to determinate actual ID.
>
> You can limit request to specific keyspace or table.
>
>
> Best regards, Vladimir Yudovin,
>
>
> *Winguzone <https://winguzone.com/?from=list> - Hosted Cloud Cassandra on
> Azure and SoftLayer.Launch your cluster in minutes.*
>
>
> ---- On Sat, 08 Oct 2016 13:42:19 -0400 *Jason
> Kania<jason.ka...@ymail.com <jason.ka...@ymail.com>>* wrote ----
>
> Hello,
>
> I am using Cassandra 3.0.9 and I have encountered an issue where the nodes
> in my 3 node cluster have vastly different amounts of data even though they
> should be roughly the same. When I looked through the data directory for my
> database on two of the nodes, I see a number of directories with the same
> prefix, eg:
>
> periodicReading-76eb7510096811e68a7421c8b9466352,
> periodicReading-453d55a0501d11e68623a9d2b6f96e86
> ...
>
> Only one directory with a specific table name prefix has a current date
> and the rest are older.
>
> In contrast, on the node with the least space used, each directory has a
> unique prefix (not shared).
>
> I am wondering what the contents of a Cassandra database directory should
> look like. Are there supposed to be multiple entries for a given table or
> just one?
>
> If just one, what would be a procedure to determine if the other
> directories with the same table are junk that can be removed.
>
> Thanks,
>
> Jason
>
>
>
>
>
>
