[jboss-jira] [JBoss JIRA] Resolved: (JBRULES-792) Some "collect" rules cause hang during assertion

Some "collect" rules cause hang during assertion ------------------------------------------------ Key: JBRULES-792 URL: http://jira.jboss.com/jira/browse/JBRULES-792 Project: JBoss Rules Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 4.0.0.MR2 Reporter: Dirk Bergstrom Assigned To: Edson Tirelli Fix For: 4.0.0.MR3 Attachments: drools-bug-no-libs.tgz, stacktraces.txt Some combinations of collect rules and objects result in an endless busy loop during assertion (100% CPU usage for 18 hours and counting). The problem doesn't happen for every object, but it is repeatable for a given object. For instance, with the following rule: rule "Find all RLIs for user" when $user : User( ) $rli_list : RecordSet( size > 0 ) from collect( RLIRecord( $resp : responsible -> ( $user.hasReport($resp) ) ) ) then $user.setRecords($rli_list, DataSource.RLI); end With 92 Users asserted, my code asserts the first 1368 RLI objects at 6-8 miliseconds per assertion, then hangs hard on #1369 (always the same object). It has sat there occupying a cpu full time for the last 18 hours, with no visible progress. On the other hand, with these two rules: when $release : ReleaseRecord( $relname : relname ) $user : User( ) $pr_list : RecordSet( size > 0 ) from collect( PRRecord( releases contains $relname, $resp : responsible -> ( $user.hasReport($resp) ) ) ) then $user.setRecords($pr_list, $release, DataSource.GNATS); end rule "Find all PRs for user" when $user : User( ) $pr_list : RecordSet( size > 0 ) from collect( PRRecord( $resp : responsible -> ( $user.hasReport($resp) ) ) ) then $user.setRecords($pr_list, DataSource.GNATS); end With 92 Users and 37 ReleaseRecords asserted, I can assert all 10600 PR objects, at between 10 and 100 msec per (it slows down a bit towards the end). Then on the next cycle the app asserts several hundred more User objects, and later asserts another 1500 Users, without a hitch. If need be, I have examples of other rule/object combinations that do and don't work. Note that a version of the RLIRecord class is attached to JBRULES 740. I'm using trunk, at revision 108xx -- forgot to note the exact revision, but it includes tirelli's hashcode caching, and a few other changes after that. This is a follow-on to JBRULES 740.