CQL3 dynamic CF design questions

2013-04-07 Thread Marko Asplund
Hi, I'm currently designing a backend service that would store user profile information for different applications. Most of the properties in a user profile would be unknown to the service and specified by the applications using the service, so the properties would need to be added dynamically.

Re: Problem loading Saved Key-Cache on 1.2.3 after upgrading from 1.1.10

2013-04-07 Thread Arya Goudarzi
Yes, I know blowing them away would fix it and that is what I did, but I want to understand why this happens in first place. I was upgrading from 1.1.10 to 1.2.3 On Fri, Apr 5, 2013 at 2:53 PM, Edward Capriolo edlinuxg...@gmail.comwrote: This has happened before the save caches files were not

Problems with shuffle

2013-04-07 Thread Rustam Aliyev
Hi, After upgrading to the vnodes I created and enabled shuffle operation as suggested. After running for a couple of hours I had to disable it because nodes were not catching up with compactions. I repeated this process 3 times (enable/disable). I have 5 nodes and each of them had ~35GB.

Re: Problem loading Saved Key-Cache on 1.2.3 after upgrading from 1.1.10

2013-04-07 Thread Edward Capriolo
It was not something you did wrong. The key cache format/classes involved changed, there are a few jira issues around this: https://issues.apache.org/jira/browse/CASSANDRA-4916 https://issues.apache.org/jira/browse/CASSANDRA-5253 Depending on how you moved between version you may or may not have

Re: Problems with shuffle

2013-04-07 Thread Edward Capriolo
I am not familiar with shuffle, but if you attempt a shuffle and it fails if would be a good idea to let compaction die down, or even trigger major compaction on the nodes where the size grew. The reason is because once the data files are on disk, even if they are duplicates, cassandra does not

Re: Cassandra services down frequently [Version 1.1.4]

2013-04-07 Thread 金剑
It also use off-heap memory out of JVM. SerializingCacheProvider should be one of the case. Best Regards! Jian Jin 2013/4/6 adeel.ak...@panasiangroup.com Thank you Aaron and Bryan for your advice. I have changed following parameters and now Cassandra running absolutely fine. Please review