[ https://issues.apache.org/jira/browse/TUSCANY-1006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ron Gavlin updated TUSCANY-1006: -------------------------------- Attachment: tuscany-sdo-impl.TUSCANY-1006.patch Patch attached. > ChangeSummaryImpl.cachedSDOObjectChanges appears to not be thread safe > ---------------------------------------------------------------------- > > Key: TUSCANY-1006 > URL: https://issues.apache.org/jira/browse/TUSCANY-1006 > Project: Tuscany > Issue Type: Bug > Components: Java SDO Implementation > Affects Versions: Java-SDO-beta1 > Environment: Sun JDK 1.4.2_11, 2-CPU server > Reporter: Ron Gavlin > Priority: Critical > Fix For: Java-SDO-beta1 > > Attachments: tuscany-sdo-impl.TUSCANY-1006.patch > > > I have an application in which multiple threads access a shared > ChangeSummaryImpl. Each thread invokes ChangeSummaryImpl.getOldValues() > repeatedly. This causes one or more of the threads to enter an infinite > "while (true) -" loop in HashMap.get(Object) with the following stack trace: > HashMap.get(Object) line: 323 > ChangeSummaryImpl.getOldValues(DataObject) line: 481 > ... > I suspect this occurs because the access to HashMap cachedSDOObjectChanges is > not synchronized. > I have been unable as of yet to create a simple test case that demonstrates > the problem. In the meantime, I will try to implement a short-term fix by > changing line 93 of ChangeSummaryImpl > from > protected HashMap cachedSDOObjectChanges = new HashMap(); > to > protected Map cachedSDOObjectChanges = Collections.synchronizedMap(new > HashMap()); > I will let you know if that fixes the problem. Any insight or assistance you > can offer concerning this problem is appreciated. This is a show-stopper > problem for us. > Regards, > - Ron -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]