RE: Question about consistency levels

2013-11-10 Thread Richard Lowe
We're using Cassandra 1.1 with Hector 1.1 library. We've found that reducing the CL when an exception occurs is useful as it's usually easier to deal with things not being consistent for a few seconds than the database read/write not succeeding at all. We have multiple DCs and use NetworkTopolo

Re: Question about consistency levels

2013-11-10 Thread graham sanderson
Thanks Richard, Note the SSTable corruption probably only happens as a result of some testing patterns we’re doing. That said we still want to make sure we can handle if it does happen (since the corrupted nodes will NOT be known to be down and thus still receive traffic). In our particular us

Helenos 1.4 released

2013-11-10 Thread Tomek Kuprowski
Hi all, Today new version (1.4) of Helenos has been released. You may find usefull links below: Download page: https://sourceforge.net/projects/helenos-gui/files/latest/download Changelog: https://github.com/tomekkup/helenos/wiki/Changelog -- -- Pozdrawiam, regards Tomek Kuprowski Helenos: ht

Tracing Queries at Cassandra Server

2013-11-10 Thread Srinath Perera
I am talking to Cassandra using Hector. Is there a way that I can trace the executed queries at the server? I have tired adding Enable DEBUG logging for org.apache.cassandra.thrift.CassandraServer as mentioned in Cassandra vs logging activity

Re: Tracing Queries at Cassandra Server

2013-11-10 Thread Takenori Sato
In addition to CassandraServer, add StorageProxy for details as follows. log4j.logger.org.apache.cassandra.service.StorageProxy=DEBUG log4j.logger.org.apache.cassandra.thrift.CassandraServer=DEBUG Hope it would help. On Mon, Nov 11, 2013 at 11:25 AM, Srinath Perera wrote: > I am talking to Ca