Yes, I need this information just for academic purposes. So, to read old data values, I tried to open the Commitlog using tail -f and also the log files viewer of Ubuntu, but I can not see many informations inside of the log! Is there any other way to open this log? I didn't find any Cassandra API for this purpose.
Thanks averybody in advance. Regards, Felipe Mathias Schmidt (Computer Science UFRGS, RS, Brazil) 2012/5/14 zhangcheng2 <zhangche...@software.ict.ac.cn>: > After compaciton, the old version data will gone! > > ________________________________ > zhangcheng2 > > From: Felipe Schmidt > Date: 2012-05-14 05:33 > To: user > Subject: Retrieving old data version for a given row > I'm trying to retrieve old data version for some row but it seems not > be possible. I'm a beginner with Cassandra and the unique aproach I > know is looking to the SSTable in the storage folder, but if I insert > some column and right after insert another value to the same row, > after flushing, I only get the last value. > Is there any way to get the old data version? Obviously, before compaction. > > Regards, > Felipe Mathias Schmidt > (Computer Science UFRGS, RS, Brazil) >
