[jboss-jira] [JBoss JIRA] Commented: (JBPORTAL-1401) Portal Unresponsiveness With Conection Pool Bottleneck
[ http://jira.jboss.com/jira/browse/JBPORTAL-1401?page=comments#action_1236... ]
Mike Millson commented on JBPORTAL-1401:
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The test is able to complete without error some times when the test is run after access
the default page. The customer noted in the related support case that one way of
reproducing the error is to run the test without first accessing the default page in the
browser. However, they were able to reproduce it even after priming the default page. I
was also, however, not consistently. So maybe reproducing it after priming the default
page is dependent on other factors such as system load.
I ran the test without priming the default page and was able to reproduce the issue. Then
I removed the CMS components as we discussed and ran the test without first accessing the
default page, and the test ran without error. I ran the test several more times, all
without error.
Portal Unresponsiveness With Conection Pool Bottleneck
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Key: JBPORTAL-1401
URL: http://jira.jboss.com/jira/browse/JBPORTAL-1401
Project: JBoss Portal
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: Portal Security
Affects Versions: 2.4.1 SP1
Environment: RHEL 5
Windows XP
Reporter: Mike Millson
Assigned To: Julien Viet
Attachments: JDBCConnectionPoolTest.java, mgm-thread-dump.txt,
portal-mysql-ds.xml, portal-oracle-ds.xml
Observed Behavior:
When the connection pool is not adequately sized, the portal freezes. A thread dump shows
that a single http connector thread holds the lock to
java.security.Permissions.implies(Permission) and is waiting BlockingTimeoutMillis to get
a connection. Almost all the other http threads are blocked waiting to aquire the lock to
java.security.Permissions.implies(Permission). Apparently the thread waiting for a
connection needs a connection to look up the permissions in the database.
Expected Behavior:
The portal should not become unresponsive. Portal 2.6 CR2 does not freeze up when the
same test is run.
I will attach the test case, thread dump, and datasource.
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