July 2006 - jboss-jira - Jboss List Archives

[JBoss JIRA] Created: (JBCACHE-691) PojoCache can throw exception when TansactionManagerLookupClass is configured as other tm

by Ben Wang (JIRA)

PojoCache can throw exception when TansactionManagerLookupClass is configured as other tm ----------------------------------------------------------------------------------------- Key: JBCACHE-691 URL: http://jira.jboss.com/jira/browse/JBCACHE-691 Project: JBoss Cache Issue Type: Bug Security Level: Public (Everyone can see) Components: PojoCache Reporter: Ben Wang Assigned To: Ben Wang Fix For: 1.4.0 This is reported by a Forum post. Basically, if we do: <attribute name="TransactionManagerLookupClass">org.jboss.cache.JBossTransactionManagerLookup</attribute> then PojoCache will throw a RuntimeException if user doesn't initiate a UserTransaction. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

17 years, 10 months

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[JBoss JIRA] Resolved: (EJBTHREE-613) Support for getTimerService in ServiceContainer for MBeans

by Carlo de Wolf (JIRA)

[ http://jira.jboss.com/jira/browse/EJBTHREE-613?page=all ] Carlo de Wolf resolved EJBTHREE-613. ------------------------------------ Resolution: Done > Support for getTimerService in ServiceContainer for MBeans > ---------------------------------------------------------- > > Key: EJBTHREE-613 > URL: http://jira.jboss.com/jira/browse/EJBTHREE-613 > Project: EJB 3.0 > Issue Type: Feature Request > Components: EJB3 Extensions > Affects Versions: EJB 3.0 RC7 - FD > Reporter: mtuckah > Assigned To: Carlo de Wolf > Fix For: EJB 3.0 RC9 - FD > > > The ServiceContainer currently does not support the getTimerService() method. This would be a useful feature for scheduled Service POJO method invocation. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

17 years, 10 months

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[JBoss JIRA] Closed: (JBESB-34) Create Programmer Guide

by Mark Little (JIRA)

[ http://jira.jboss.com/jira/browse/JBESB-34?page=all ] Mark Little closed JBESB-34. ---------------------------- Resolution: Done > Create Programmer Guide > ----------------------- > > Key: JBESB-34 > URL: http://jira.jboss.com/jira/browse/JBESB-34 > Project: JBoss ESB > Issue Type: Feature Request > Security Level: Public(Everyone can see) > Components: Documentation > Reporter: Mark Little > Assigned To: Mark Little > Fix For: 4.0 Beta 1 > > -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

17 years, 10 months

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[JBoss JIRA] Updated: (JBESB-29) Create administration guide

by Mark Little (JIRA)

[ http://jira.jboss.com/jira/browse/JBESB-29?page=all ] Mark Little updated JBESB-29: ----------------------------- Fix Version/s: 4.0 Beta 1 (was: 4.0) > Create administration guide > --------------------------- > > Key: JBESB-29 > URL: http://jira.jboss.com/jira/browse/JBESB-29 > Project: JBoss ESB > Issue Type: Task > Security Level: Public(Everyone can see) > Components: ESB Core, Documentation > Reporter: Mark Little > Assigned To: Suren Naidoo > Fix For: 4.0 Beta 1 > > -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

17 years, 10 months

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[JBoss JIRA] Updated: (JBESB-28) Create architecture documentation

by Mark Little (JIRA)

[ http://jira.jboss.com/jira/browse/JBESB-28?page=all ] Mark Little updated JBESB-28: ----------------------------- Fix Version/s: 4.0 Beta 1 (was: 4.0) > Create architecture documentation > --------------------------------- > > Key: JBESB-28 > URL: http://jira.jboss.com/jira/browse/JBESB-28 > Project: JBoss ESB > Issue Type: Task > Security Level: Public(Everyone can see) > Components: ESB Core, Documentation > Reporter: Mark Little > Assigned To: Suren Naidoo > Fix For: 4.0 Beta 1 > > -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

17 years, 10 months

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[JBoss JIRA] Updated: (JBESB-31) Create development guide

by Mark Little (JIRA)

[ http://jira.jboss.com/jira/browse/JBESB-31?page=all ] Mark Little updated JBESB-31: ----------------------------- Fix Version/s: 4.0 Beta 1 (was: 4.0) > Create development guide > ------------------------ > > Key: JBESB-31 > URL: http://jira.jboss.com/jira/browse/JBESB-31 > Project: JBoss ESB > Issue Type: Task > Security Level: Public(Everyone can see) > Components: ESB Core, Documentation > Reporter: Mark Little > Assigned To: Suren Naidoo > Fix For: 4.0 Beta 1 > > > Document how developers can checkout, build and develop plugins/enhancements/etc to JBossESB. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

17 years, 10 months

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[JBoss JIRA] Updated: (JBESB-30) Ensure public javadoc comments are present and informative

by Mark Little (JIRA)

[ http://jira.jboss.com/jira/browse/JBESB-30?page=all ] Mark Little updated JBESB-30: ----------------------------- Fix Version/s: 4.0 Beta 1 (was: 4.0) > Ensure public javadoc comments are present and informative > ---------------------------------------------------------- > > Key: JBESB-30 > URL: http://jira.jboss.com/jira/browse/JBESB-30 > Project: JBoss ESB > Issue Type: Task > Security Level: Public(Everyone can see) > Components: ESB Core, Documentation > Reporter: Mark Little > Assigned To: Suren Naidoo > Fix For: 4.0 Beta 1 > > -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

17 years, 10 months

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[JBoss JIRA] Updated: (JBCACHE-679) Deadlock using transactional JBossCache with Hibernate

by Yegor Yenikyeyev (JIRA)

[ http://jira.jboss.com/jira/browse/JBCACHE-679?page=all ] Yegor Yenikyeyev updated JBCACHE-679: ------------------------------------- Attachment: nloptc.zip I'm attaching a simple test application illustrating the problem described above. Archive content description: db folder contains simple PostgreSQL DB creation script and datasource XML descriptor nloptc.war is application itself (it doesn't contain libraries in order to reduce attachement size) project folder is eclipse project dir with source code and config files webinf-lib.list is text file with list of libraries required for the app Please let me know if you need me to provide libraries separately. [ Show » ] Yegor Yenikyeyev [11/Jul/06 05:49 AM] I'm attaching a simple test application illustrating the problem described above. Archive content description: db folder contains simple PostgreSQL DB creation script and datasource XML descriptor nloptc.war is application itself (it doesn't contain libraries in order to reduce attachement size) project folder is eclipse project dir with source code and config files webinf-lib.list is text file with list of libraries required for the app Please let me know if you need me to provide libraries separately. > Deadlock using transactional JBossCache with Hibernate > ------------------------------------------------------ > > Key: JBCACHE-679 > URL: http://jira.jboss.com/jira/browse/JBCACHE-679 > Project: JBoss Cache > Issue Type: Bug > Security Level: Public(Everyone can see) > Components: Clustering, Replication > Affects Versions: 1.3.0.SP2 > Environment: SUSE 10.1, kernel 2.6.15 SPM, JDK 1.5.0_06, PostgreSQL 8.0.1 > Reporter: Yegor Yenikyeyev > Assigned To: Manik Surtani > Priority: Critical > Attachments: nloptc.zip > > > It seems like we discovered an unpredictable Hibernate and/or TreeCache behavior after upgrade JBossCache from 1.2.4SP2 to JBossCache 1.3.0SP2. For now I can witness that the same problem appears with 1.4.0CR2. I do not think that it's Hibernate-only or TreeCache-only issue but I do think it's a kind of integration issue or misunderstanding of how TreeCache transaction isolation is implemented. > Our application works in clustered environment and we use JBossCache as L2 cache solution for Hibernate 3.1.3 (I checked this with 3.2.0CR2 as well). Our settings for JBossCache are > REPL_SYNC, READ_COMMITED and our target business object methods (f1 and f2) have PROPAGATION_REQUIRED and PROPAGATION_REQUIRES_NEW. Our JDBC driver is 3.0 compliant. > Our objects hierarchy is like: Occasion contains link to Round and Round contains link to Tournament. Round is NOT configured as "lazy" field in Occasion mapping b/c we always need to have it initialized. > > Here is in short what we try to do in our application: > > (1) Transaction1: Call f1 (PROPAGATION_REQUIRED) method of a business object and it causes Occasion1 to be loaded via a cachable query. After that Hibernate initializes Occasion1.round field and loads Round1. > (2) Transaction1: Hibernate puts loaded Occasion1 and Round1 in L2 cache. > (3) Transaction1: TreeCache creates com/companyname/Occasion/com.companyname.Occasion#1 region and obtains WriteLock (WL1) > (4) Transaction1: TreeCache creates com/companyname/Round/com.companyname.Round#1 region and obtains WriteLock (WL2) > (5) Transaction1: Do some business logic stuff > (6) Transaction1: We expect current transaction to be long and we want to change status of Occasoin1 in DB very quickly. At this point we need an exclusive lock for appropriate row in DB table to change the status and commit it. In order to do this we call f2 (PROPAGATION_REQUIRES_NEW) which suppose to be a REALLY short transaction which release lock on the DB row as fast as possible. > > (7) Transaction2: Transaction1 SUSPENDED at this point. We call HibernateTemplate (we use Spring as well) to load Occasion1 for update with LockMode.UPGRADE flag and get exclusive lock. > (8) Transaction2: Hibernate does NOT check for an instance of Occasion1 in L2 cache ( I suppose it's b/c we obviously do want to lock it for update ) > (9) Transaction2: Hibernate does check for an instance of Round1 in L2 cache and it calls get() on TreeCache to obtain com/companyname/Round/com.companyname.Round#1 > (10) Transaction2: At this point 1.3.0SP2 tries to obtain ReadLock for com/companyname/Round/com.companyname.Round#1 and it can't b/c there is a WL for that node in suspended Transaction1 !!! It can't obtain ReadLock for Round#1 anyhow! > (11) Transaction2: Stuck waiting for WL2 to be released in TreeCache but it can't be released as soon as Transaction1 suspended and waits for Transaction2 to finish. > > Obviously this situation is ridiculous - a legal sequence of operations causes a deadlock on TreeCache. We do not expect com/companyname/Round/com.companyname.Round#1 to be visible in Transaction2 b/c we use READ_COMMITED but WL2 must not affect Transaction2 in this way. As soon as TreeCache prevents other transactions from reading com/companyname/Round/com.companyname.Round#1 it must not tell other transactions that the node exists to keep READ_COMMITED behavior consistent. For now it simply preventing everybody from using PROPAGATION_REQUIRES_NEW. > The described scenario works with 1.2.4SP2 without a problem and I have serious concern that READ_COMMITED strategy is really implemented in v1.2.4 but at least the behavior is more consistent comparing to v1.3.0. As far as i understand this is result of JBCACHE-218 bugfix. > > We tried to change PROPAGATION_REQUIRES_NEW to PROPAGATION_NESTED and take advantage of nested transactions. We assume that com/companyname/Round/com.companyname.Round#1 would be available in a nested Transaction2 from Transaction1. But PROPAGATION_NESTED isn't supported by current JBossTransaction implementation (see line 209 in TxManager.java from 4.0.4.GA). > We could change isolation to READ_UNCOMMITED but it's simply impossible in many other places of our application. > We could make a trick and load Occasion1 with Round1 in a separate Transaction0 before starting Transaction1 but we HAVE to use LRU policy. That is why there is no chance for us to make sure that eviction won't happen between Transaction0 and Transaction1. If it happened then we are in the same situation as described above. > Finally we could stop using Transaction2 but our application is intend to handle large amount of traffic and as soon as Transaction1 takes up to 3sec (comparing to 50ms for Transaction2) we might get up to 700-1000 transactions on queue waiting for table row lock to be released and we just can't allow this. > > From what I see in Hibernate TreeCache sources and I have no idea how to avoid the situation described above. One of my developers told me that probably it's possible to put stuff into L2 cache on transaction commit which would decrease WL time and resolve the issue with the deadlock. Honestly I'm seriously concerned how it applies to existing Hibernate. I think small issues like performance issue of loading the same object during 1 transaction more then once can be resolved by using L1 cache or JDBC driver abilities. But I guess there are a plenty of work to make this working for cachable queries. > Another option I see is to do a trick and put values for Round1 and Occasion1 into a new region for Transaction2 if we know that Transaction1 suspended and owns WLs for various nodes. I really do not like this way b/c in fact it's not a pure pessimistic locking. But the issue described before is worse price for "pure" READ_COMMITED strategy. In fact it showstopper assuming there is no way to use PROPAGATION_NESTED. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

17 years, 10 months

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[JBoss JIRA] Updated: (HIBERNATE-41) Usage of load() in PROPAGATION_REQUIRES_NEW within PROPAGATION_REQUIRED method causes a deadlock

by Yegor Yenikyeyev (JIRA)

[ http://jira.jboss.com/jira/browse/HIBERNATE-41?page=all ] Yegor Yenikyeyev updated HIBERNATE-41: -------------------------------------- Attachment: nloptc.zip I'm attaching a simple test application illustrating the problem described above. Archive content description: db folder contains simple PostgreSQL DB creation script and datasource XML descriptor nloptc.war is application itself (it doesn't contain libraries in order to reduce attachement size) project folder is eclipse project dir with source code and config files webinf-lib.list is text file with list of libraries required for the app Please let me know if you need me to provide libraries separately. > Usage of load() in PROPAGATION_REQUIRES_NEW within PROPAGATION_REQUIRED method causes a deadlock > ------------------------------------------------------------------------------------------------ > > Key: HIBERNATE-41 > URL: http://jira.jboss.com/jira/browse/HIBERNATE-41 > Project: Hibernate > Issue Type: Bug > Environment: SUSE 10.1, kernel 2.6.15 SPM, JDK 1.5.0_06, PostgreSQL 8.0.1 > Reporter: Yegor Yenikyeyev > Assigned To: Steve Ebersole > Priority: Blocker > Attachments: nloptc.zip > > > It seems like we discovered an unpredictable Hibernate and/or TreeCache behavior after upgrade JBossCache from 1.2.4SP2 to JBossCache 1.3.0SP2. For now I can witness that the same problem appears with 1.4.0CR2. I do not think that it's Hibernate-only or TreeCache-only issue but I do think it's a kind of integration issue or misunderstanding of how TreeCache transaction isolation is implemented. According Manik Surtani JBossCache v1.2.4 had an issue with READ_COMMITED implementation (JBCACHE-218 ) and sinnce it fixed any usage of PROPAGATION_REQUIRES_NEW within PROPAGATION_REQUIRED method causes a deadlock if both method load same instance of an entiry. > Our application works in clustered environment and we use JBossCache as L2 cache solution for Hibernate 3.1.3 (I checked this with 3.2.0CR2 as well). Our settings for JBossCache are > REPL_SYNC, READ_COMMITED and our target business object methods (f1 and f2) have PROPAGATION_REQUIRED and PROPAGATION_REQUIRES_NEW. Our JDBC driver is 3.0 compliant. > Our objects hierarchy is like: Occasion contains link to Round and Round contains link to Tournament. Round is NOT configured as "lazy" field in Occasion mapping b/c we always need to have it initialized. > > Here is in short what we try to do in our application: > > (1) Transaction1: Call f1 (PROPAGATION_REQUIRED) method of a business object and it causes Occasion1 to be loaded via a cachable query. After that Hibernate initializes Occasion1.round field and loads Round1. > (2) Transaction1: Hibernate puts loaded Occasion1 and Round1 in L2 cache. > (3) Transaction1: TreeCache creates com/companyname/Occasion/com.companyname.Occasion#1 region and obtains WriteLock (WL1) > (4) Transaction1: TreeCache creates com/companyname/Round/com.companyname.Round#1 region and obtains WriteLock (WL2) > (5) Transaction1: Do some business logic stuff > (6) Transaction1: We expect current transaction to be long and we want to change status of Occasoin1 in DB very quickly. At this point we need an exclusive lock for appropriate row in DB table to change the status and commit it. In order to do this we call f2 (PROPAGATION_REQUIRES_NEW) which suppose to be a REALLY short transaction which release lock on the DB row as fast as possible. > > (7) Transaction2: Transaction1 SUSPENDED at this point. We call HibernateTemplate (we use Spring as well) to load Occasion1 for update with LockMode.UPGRADE flag and get exclusive lock. > (8) Transaction2: Hibernate does NOT check for an instance of Occasion1 in L2 cache ( I suppose it's b/c we obviously do want to lock it for update ) > (9) Transaction2: Hibernate does check for an instance of Round1 in L2 cache and it calls get() on TreeCache to obtain com/companyname/Round/com.companyname.Round#1 > (10) Transaction2: At this point 1.3.0SP2 tries to obtain ReadLock for com/companyname/Round/com.companyname.Round#1 and it can't b/c there is a WL for that node in suspended Transaction1 !!! It can't obtain ReadLock for Round#1 anyhow! > (11) Transaction2: Stuck waiting for WL2 to be released in TreeCache but it can't be released as soon as Transaction1 suspended and waits for Transaction2 to finish. > > Obviously this situation is ridiculous - a legal sequence of operations causes a deadlock on TreeCache. We do not expect com/companyname/Round/com.companyname.Round#1 to be visible in Transaction2 b/c we use READ_COMMITED but WL2 must not affect Transaction2 in this way. As soon as TreeCache prevents other transactions from reading com/companyname/Round/com.companyname.Round#1 it must not tell other transactions that the node exists to keep READ_COMMITED behavior consistent. For now it simply preventing everybody from using PROPAGATION_REQUIRES_NEW. > The described scenario works with 1.2.4SP2 without a problem and I have serious concern that READ_COMMITED strategy is really implemented in v1.2.4 but at least the behavior is more consistent comparing to v1.3.0. As far as i understand this is result of JBCACHE-218 bugfix. > > We tried to change PROPAGATION_REQUIRES_NEW to PROPAGATION_NESTED and take advantage of nested transactions. We assume that com/companyname/Round/com.companyname.Round#1 would be available in a nested Transaction2 from Transaction1. But PROPAGATION_NESTED isn't supported by current JBossTransaction implementation (see line 209 in TxManager.java from 4.0.4.GA). > We could change isolation to READ_UNCOMMITED but it's simply impossible in many other places of our application. > We could make a trick and load Occasion1 with Round1 in a separate Transaction0 before starting Transaction1 but we HAVE to use LRU policy. That is why there is no chance for us to make sure that eviction won't happen between Transaction0 and Transaction1. If it happened then we are in the same situation as described above. > Finally we could stop using Transaction2 but our application is intend to handle large amount of traffic and as soon as Transaction1 takes up to 3sec (comparing to 50ms for Transaction2) we might get up to 700-1000 transactions on queue waiting for table row lock to be released and we just can't allow this. > > From what I see in Hibernate TreeCache sources and I have no idea how to avoid the situation described above. One of my developers told me that probably it's possible to put stuff into L2 cache on transaction commit which would decrease WL time and resolve the issue with the deadlock. Honestly I'm seriously concerned how it applies to existing Hibernate. I think small issues like performance issue of loading the same object during 1 transaction more then once can be resolved by using L1 cache or JDBC driver abilities. But I guess there are a plenty of work to make this working for cachable queries. > Another option I see is to do a trick and put values for Round1 and Occasion1 into a new region for Transaction2 if we know that Transaction1 suspended and owns WLs for various nodes. I really do not like this way b/c in fact it's not a pure pessimistic locking. But the issue described before is worse price for "pure" READ_COMMITED strategy. In fact it showstopper assuming there is no way to use PROPAGATION_NESTED. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

17 years, 10 months

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[JBoss JIRA] Closed: (JBAOP-229) Test AOPJoinpointFactory with mixed proxy/advisor

by Kabir Khan (JIRA)

[ http://jira.jboss.com/jira/browse/JBAOP-229?page=all ] Kabir Khan closed JBAOP-229. ---------------------------- Resolution: Done Assignee: Kabir Khan Done last week > Test AOPJoinpointFactory with mixed proxy/advisor > ------------------------------------------------- > > Key: JBAOP-229 > URL: http://jira.jboss.com/jira/browse/JBAOP-229 > Project: JBoss AOP > Issue Type: Sub-task > Reporter: Adrian Brock > Assigned To: Kabir Khan > > Test the AOPJoinpointFactory with mixed proxy/real aop advisors. > e.g. The super class is advised, but the subclass needs a proxy > e.g.2. The subclass is already advised but needs an instance proxy/advisor > etc. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

17 years, 10 months

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