[ https://issues.apache.org/jira/browse/CONNECTORS-166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Karl Wright resolved CONNECTORS-166. ------------------------------------ Resolution: Fixed Fix Version/s: ManifoldCF 0.2 r1082140. > Crawl seizes up when running Derby > ---------------------------------- > > Key: CONNECTORS-166 > URL: https://issues.apache.org/jira/browse/CONNECTORS-166 > Project: ManifoldCF > Issue Type: Bug > Components: Framework crawler agent > Affects Versions: ManifoldCF 0.1, ManifoldCF 0.2 > Reporter: Karl Wright > Assignee: Karl Wright > Fix For: ManifoldCF 0.2 > > > A crawl using multiple worker threads with Derby eventually hangs, because > threads get deadlocked dealing with carrydown information. At the time of > hang, a thread dump yields: > "Worker thread '5'" daemon prio=6 tid=0x02fc7800 nid=0xd78 in Object.wait() > [0x0465f000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x2858b720> (a > org.apache.manifoldcf.core.database.Database$ExecuteQueryThread) > at java.lang.Thread.join(Unknown Source) > - locked <0x2858b720> (a > org.apache.manifoldcf.core.database.Database$ExecuteQueryThread) > at java.lang.Thread.join(Unknown Source) > at > org.apache.manifoldcf.core.database.Database.executeViaThread(Database.java:453) > at > org.apache.manifoldcf.core.database.Database.executeUncachedQuery(Database.java:489) > at > org.apache.manifoldcf.core.database.Database$QueryCacheExecutor.create(Database.java:1131) > at > org.apache.manifoldcf.core.cachemanager.CacheManager.findObjectsAndExecute(CacheManager.java:144) > at > org.apache.manifoldcf.core.database.Database.executeQuery(Database.java:168) > at > org.apache.manifoldcf.core.database.DBInterfaceDerby.performQuery(DBInterfaceDerby.java:785) > at > org.apache.manifoldcf.crawler.jobs.JobManager.processDeleteHashSet(JobManager.java:2592) > at > org.apache.manifoldcf.crawler.jobs.JobManager.calculateAffectedDeleteCarrydownChildren(JobManager.java:2565) > at > org.apache.manifoldcf.crawler.jobs.JobManager.markDocumentDeletedMultiple(JobManager.java:2494) > at > org.apache.manifoldcf.crawler.system.WorkerThread.processDeleteLists(WorkerThread.java:1077) > at > org.apache.manifoldcf.crawler.system.WorkerThread.run(WorkerThread.java:544) > ... for at least two threads. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira