Thanks you again, we're going to update our enviroment. Regards, Roberto
On 28 March 2011 17:08, Ching-Cheng Chen <cc...@evidentsoftware.com> wrote: > > AFAIK, setting gc_grace_period to 0 shouldn't cause this issue. In fact, > that what I'm using now in a single node environment like yours. > > However, I'm using 0.7.2 with some patches. If you are still using 0.7.0, > most likely you got hit with this bug. > You might want to patch it or upgrade to latest release. > > https://issues.apache.org/jira/browse/CASSANDRA-2059 > > Regards, > > <https://issues.apache.org/jira/browse/CASSANDRA-2059> > > Chen > > Senior Developer, EvidentSoftware(Leaders in Monitoring of NoSQL & JAVA ) > > http://www.evidentsoftware.com > > On Mon, Mar 28, 2011 at 11:04 AM, Roberto Bentivoglio < > roberto.bentivog...@gmail.com> wrote: > >> Hi Chen, >> we've set the gc grace period of the column families to 0 as suggest in a >> single node enviroment. >> Can this setting cause the problem? I don't think so... >> >> Thanks, >> Roberto >> >> On 28 March 2011 16:54, Ching-Cheng Chen <cc...@evidentsoftware.com>wrote: >> >>> tombstones removal also depends on your gc grace period setting. >>> >>> If you are pretty sure that you have proper gc grace period set and still >>> on 0.7.0, then probably related to this bug. >>> >>> https://issues.apache.org/jira/browse/CASSANDRA-2059 >>> >>> Regards, >>> >>> <https://issues.apache.org/jira/browse/CASSANDRA-2059> >>> >>> Chen >>> >>> Senior Developer, EvidentSoftware(Leaders in Monitoring of NoSQL & JAVA ) >>> >>> http://www.evidentsoftware.com >>> >>> On Mon, Mar 28, 2011 at 10:40 AM, Roberto Bentivoglio < >>> roberto.bentivog...@gmail.com> wrote: >>> >>>> Hi all, >>>> we're working on a Cassandra 0.7.0 production enviroment with a store of >>>> data near to 500 GB. >>>> We need to periodically remove the tombstones from deleted/expired data >>>> performing a major compaction operation through nodetool. >>>> After invoking the compaction on a single column family we can see from >>>> JConsole that the LiveSSTableCount is going from 15 to 3 while the >>>> LiveDiskSpaceUsed is going from 90GB to 50GB. >>>> The problem now is that the space on the file system is been taken from >>>> Cassandra (I assumed from the old SSTable) and it isn't freed. We have >>>> tried >>>> to perform a full GC from the JConsole as described in >>>> http://wiki.apache.org/cassandra/MemtableSSTable without any success. >>>> The space is freed only after a database restart. >>>> >>>> How can we free this disk space without restart the db? >>>> >>>> Thanks you very much, >>>> Roberto Bentivoglio >>>> >>> >>> >> >
