Re: questions related to the SSTable file

2013-09-17 Thread Takenori Sato(Cloudian)
Thanks, Rob, for clarifying! - Takenori (2013/09/18 10:01), Robert Coli wrote: On Tue, Sep 17, 2013 at 5:46 PM, Takenori Sato > wrote: > So in fact, incremental backup of Cassandra is just hard link all the new SSTable files being generated during the increme

Re: questions related to the SSTable file

2013-09-16 Thread Takenori Sato(Cloudian)
Hi, > 1) I will expect same row key could show up in both sstable2json output, as this one row exists in both SSTable files, right? Yes. > 2) If so, what is the boundary? Will Cassandra guarantee the column level as the boundary? What I mean is that for one column's data, it will be guarant

Re: OrderPreservingPartitioner in 1.2

2013-08-25 Thread Takenori Sato(Cloudian)
From the Jira, > One possibility is that getToken of OPP can return hex value if it fails to encode bytes to UTF-8 instead of throwing error. By this system tables seem to be working fine with OPP. This looks like an option to try for me. Thanks! (2013/08/23 20:44), Vara Kumar wrote: For th

Re: Cleanup understastanding

2013-05-28 Thread Takenori Sato(Cloudian)
Hi Victor, As Andrey said, running cleanup doesn't work as you expect. > The reason I need to clean things is that I wont need most of my inserted data on the next day. Deleted objects(columns/records) become deletable from sstable file when they get expired(after gc_grace_seconds). Such d

Re: -pr vs. no -pr

2013-02-28 Thread Takenori Sato(Cloudian)
Hi, Please note that I confirmed on v1.0.7. > I mean a repair involves all three nodes and pushes and pulls data, right? Yes, but that's how -pr works. A repair without -pr does more. For example, suppose you have a ring with RF=3 like this. A - B - C - D - E - F Then, a repair on A withou

Re: CPU hotspot at BloomFilterSerializer#deserialize

2013-02-05 Thread Takenori Sato(Cloudian)
Hi, We found this issue is specific to 1.0.1 through 1.0.8, which was fixed at 1.0.9. https://issues.apache.org/jira/browse/CASSANDRA-4023 So by upgrading, we will see a reasonable performnace no matter how large row we have! Thanks, Takenori (2013/02/05 2:29), aaron morton wrote: Yes, it