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Posted to user@cassandra.apache.org by Donald Smith <Do...@audiencescience.com> on 2015/04/29 07:04:17 UTC
Tables showing up as our_table-147a2090ed4211e480153bc81e542ebd/ in
data dir
Using 2.1.4, tables in our data/ directory are showing up as
our_table-147a2090ed4211e480153bc81e542ebd/
instead of as
our_table/
Why would that happen? We're also seeing lagging compactions and high cpu usage.
Thanks, Don
RE: Tables showing up as
our_table-147a2090ed4211e480153bc81e542ebd/ in data dir
Posted by "Peer, Oded" <Od...@rsa.com>.
See https://github.com/apache/cassandra/blob/trunk/NEWS.txt#L173
SSTable data directory name is slightly changed. Each directory will have hex string appended after CF name, e.g. ks/cf-5be396077b811e3a3ab9dc4b9ac088d/
This hex string part represents unique ColumnFamily ID.
Note that existing directories are used as is, so only newly created directories after upgrade have new directory name format.
From: Donald Smith [mailto:Donald.Smith@audiencescience.com]
Sent: Wednesday, April 29, 2015 8:04 AM
To: user@cassandra.apache.org
Subject: Tables showing up as our_table-147a2090ed4211e480153bc81e542ebd/ in data dir
Using 2.1.4, tables in our data/ directory are showing up as
our_table-147a2090ed4211e480153bc81e542ebd/
instead of as
our_table/
Why would that happen? We're also seeing lagging compactions and high cpu usage.
Thanks, Don
Re: Tables showing up as our_table-147a2090ed4211e480153bc81e542ebd/
in data dir
Posted by Phil Yang <ud...@gmail.com>.
see https://github.com/apache/cassandra/blob/cassandra-2.1/NEWS.txt#L77
SSTable data directory name will have hex string appended after CF name
2015-04-29 13:04 GMT+08:00 Donald Smith <Do...@audiencescience.com>:
> Using 2.1.4, tables in our data/ directory are showing up as
>
>
> our_table-147a2090ed4211e480153bc81e542ebd/
>
>
> instead of as
>
>
> our_table/
>
>
> Why would that happen? We're also seeing lagging compactions and high
> cpu usage.
>
>
> Thanks, Don
>
--
Thanks,
Phil Yang
Re: Tables showing up as our_table-147a2090ed4211e480153bc81e542ebd/
in data dir
Posted by Yuki Morishita <mo...@gmail.com>.
Directory structure is changed in 2.1 to prevent various problems
caused by DROP/re-CREATE the same table
(https://issues.apache.org/jira/browse/CASSANDRA-5202).
>From NEWS.txt:
2.1
===
New features
------------
...
- SSTable data directory name is slightly changed. Each directory will
have hex string appended after CF name, e.g.
ks/cf-5be396077b811e3a3ab9dc4b9ac088d/
This hex string part represents unique ColumnFamily ID.
Note that existing directories are used as is, so only newly created
directories after upgrade have new directory name format.
On Wed, Apr 29, 2015 at 2:04 PM, Donald Smith
<Do...@audiencescience.com> wrote:
> Using 2.1.4, tables in our data/ directory are showing up as
>
>
> our_table-147a2090ed4211e480153bc81e542ebd/
>
>
> instead of as
>
>
> our_table/
>
>
> Why would that happen? We're also seeing lagging compactions and high cpu
> usage.
>
>
> Thanks, Don
--
Yuki Morishita
t:yukim (http://twitter.com/yukim)