> -----Original Message----- > From: Christopher L. Everett [mailto:[EMAIL PROTECTED] > Sent: Wednesday, October 06, 2004 1:47 AM > To: Mysql List > Subject: Repeated corruption with MySQL 4.1.x using FULLTEXT indexes > > I have an application where I create a faily large table (835MB) with a > fulltext index. One of our development workstations and our production > server will run the script to load the table, but afterwards we have a > pervasive corruption, with out of range index index pointer errors. > Oddly, my development workstation doesn't have those problems. > > My box and the ones having the problems have the following differences: > > - my box runs ReiserFS, the problem boxes run XFS > - my box has a nice SCSI HD subsystem, the problem boxes do IDE. > > All three boxes run Linux 2.6.x kernels, and my workstation and production > server share the same mobo. Come to think of it, I saw similar corruption > issues under 2.4.x series kernels and MySQL v4.0.x, it just wasn't the > show stopper it is now. > > Also, on all three boxes, altering the table to drop an index and create > a new one requires a "myisamchk -rq" run afterwards when a fulltext index > either exists or gets added or dropped, which I'd also call a bug.
The problems you're describing are similar to what I've run into when there have been hardware related problems. One system had a problem with ram. Memory tests would test and report ram as ok, but everything started working when I replaced the ram. I think it was just brand incompatibility or something odd, because the ram never gave any problems in another system. One system had hard drive media slowly failing and this wasn't obvious until we ran several full scan chkdsks. The funniest situation was where enough dust had collected in the CPU fan to cause slight over heating, which resulted in oddball errors. In each of these cases, everything would work fine until the system would start processing larger amounts of data. Small amounts of corruption began to show up that seemed to build on itself. This may or may not relate to what you're dealing with, but maybe it will help =) -Ed -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
