Hi All We've noticed a couple of strange/intermittent errors when we are running reactor under load.
The first is with http://trac.reactorframework.org/reactor/browser/trunk/reactor/iterator/iterator.cfc#L638. If you an iterator object in session or application scope one thread could modify the value of variables.column list while the another thread is mid loop. This is giving us errors such as: * Error Executing Database Query - Query Of Queries syntax error Encountered "FROM. Incorrect Select List, Incorrect select column * Error Executing Database Query - Query Of Queries syntax error Encountered "[. Incorrect Select List, Incorrect select column The second issue has left me really confused - but hopefully someone can shed some light if I describe what I am seeing. This only happens when I delete all the generated files on the server and then run a spider over the site downloading pages as fast as I can. What happens is various places in the site start reporting errors such as: * Error Executing Database Query. - Can not issue empty query If I go into the project/projectName/Queries folder and delete everything the problem goes away. Digging a little deeper yesterday I decided to remove files from this folder one at a time until the problem disappeared. To start with I had the following in my Queries directory: elderberry1# ls -l -rw-r--r-- 1 nobody nobody 418 Apr 3 17:41 mysql4_32A555A0E0A4EB3922128461A89E6758.cfm -rw-r--r-- 1 nobody nobody 1060 Apr 3 20:55 mysql4_3BEAC4648F61B3A87578FDFF4DF7554E.cfm -rw-r--r-- 1 nobody nobody 297 Apr 3 20:58 mysql4_44F979C97340DA3CE0D2021AD0ACAA30.cfm -rw-r--r-- 1 nobody nobody 189 Apr 3 21:00 mysql4_52C2EE5CEB0B9E9771C39DDDC6D39805.cfm -rw-r--r-- 1 nobody nobody 287 Apr 3 20:58 mysql4_541D944DE40657C9F4485F61D73879E5.cfm -rw-r--r-- 1 nobody nobody 1011 Apr 3 20:58 mysql4_545D709DDFB7FB9A39D83DE61B51E807.cfm -rw-r--r-- 1 nobody nobody 512 Apr 3 17:41 mysql4_9749F8EF18553997508285FEB9E7AF75.cfm -rw-r--r-- 1 nobody nobody 2660 Apr 3 17:41 mysql4_9C8A9EF73C5E5FC54B256A0D40D7D363.cfm ...etc... -rw-r--r-- 1 nobody nobody 488 Apr 3 20:56 mysql4_FC97C2FFA26AB9EA20FC175828F817F5.cfm drwxr-xr-x 2 root root 1024 Apr 3 21:11 tmp I moved the files one at a time into the tmp folder, refreshing the page that was throwing the error until the error disappeared. elderberry1# mv mysql4_32A555A0E0A4EB3922128461A89E6758.cfm tmp/ elderberry1# mv mysql4_3BEAC4648F61B3A87578FDFF4DF7554E.cfm tmp/ elderberry1# mv mysql4_44F979C97340DA3CE0D2021AD0ACAA30.cfm tmp/ <<<<<<<<<<<<<< THIS FIXED IT! The mysql4_44F979C97340DA3CE0D2021AD0ACAA30.cfm was regenerated and the error went away. I checked the contents of the new file with the old one expecting them to be and they were identical: elderberry1# cat mysql4_44F979C97340DA3CE0D2021AD0ACAA30.cfm SELECT `Tender_Location`.`TenderUUID` AS `TenderUUID`, `Tender_Location`.`LocationUUID` AS `LocationUUID` FROM `atii`.`Tender_Location` AS `Tender_Location` WHERE `Tender_Location`.`TenderUUID` = <cfqueryparam cfsqltype="cf_sql_varchar" maxlength="36" value="#arguments.Query.getValue(1)#" /> elderberry1# cd tmp elderberry1# cat mysql4_44F979C97340DA3CE0D2021AD0ACAA30.cfm SELECT `Tender_Location`.`TenderUUID` AS `TenderUUID`, `Tender_Location`.`LocationUUID` AS `LocationUUID` FROM `atii`.`Tender_Location` AS `Tender_Location` WHERE `Tender_Location`.`TenderUUID` = <cfqueryparam cfsqltype="cf_sql_varchar" maxlength="36" value="#arguments.Query.getValue(1)#" /> This left me very puzzled. I checked the directory listing again and noticed that there were two new files: elderberry1# cd .. elderberry1# ls -l total 54 -rw-r--r-- 1 nobody nobody 418 Apr 3 21:12 mysql4_32A555A0E0A4EB3922128461A89E6758.cfm -rw-r--r-- 1 nobody nobody 297 Apr 3 21:12 mysql4_44F979C97340DA3CE0D2021AD0ACAA30.cfm -rw-r--r-- 1 nobody nobody 189 Apr 3 21:00 mysql4_52C2EE5CEB0B9E9771C39DDDC6D39805.cfm -rw-r--r-- 1 nobody nobody 287 Apr 3 20:58 mysql4_541D944DE40657C9F4485F61D73879E5.cfm -rw-r--r-- 1 nobody nobody 1011 Apr 3 20:58 mysql4_545D709DDFB7FB9A39D83DE61B51E807.cfm -rw-r--r-- 1 nobody nobody 512 Apr 3 17:41 mysql4_9749F8EF18553997508285FEB9E7AF75.cfm -rw-r--r-- 1 nobody nobody 450 Apr 3 21:12 mysql4_9A42F5B932DD262F4B475143BC30D5CC.cfm <<<<<<<<<<<<<< NEW! -rw-r--r-- 1 nobody nobody 804 Apr 3 21:12 mysql4_9A7CA2B2B74B1B6D46F409CD8020D6CB.cfm <<<<<<<<<<<<<< NEW! -rw-r--r-- 1 nobody nobody 2660 Apr 3 17:41 mysql4_9C8A9EF73C5E5FC54B256A0D40D7D363.cfm ...etc... -rw-r--r-- 1 nobody nobody 488 Apr 3 20:56 mysql4_FC97C2FFA26AB9EA20FC175828F817F5.cfm drwxr-xr-x 2 root root 1024 Apr 3 21:12 tmp So why was the presence of the mysql_44F... file preventing the generation of these two other files? I've had a look and as far as I can tell this would be related to http://trac.reactorframework.org/reactor/browser/trunk/reactor/query/query.cfc#L57, but beyond that I am stumped. If anyone has any ideas I'd love to hear them. Cheers Mark Mark Stanton Gruden Pty Ltd http://www.gruden.com -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Reactor for ColdFusion Mailing List [email protected] Archives at: http://www.mail-archive.com/reactor%40doughughes.net/ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
