tasks will not run more often than leaseTime minutes
----------------------------------------------------
Key: ROL-1761
URL: https://issues.apache.org/roller/browse/ROL-1761
Project: Roller
Issue Type: Bug
Components: Database Access & Data Model
Affects Versions: 4.0
Environment: solaris 10, oracle 10g, glassfishv2
Reporter: Dick Davies
Assignee: Roller Unassigned
We're finding that our tasks won't run more often than every leaseTime minutes.
After a bit more digging, we found our JPAThreadManagerImpl.unregisterLease()
method is not updating the database,
so any lease that is successfully taken out are kept , blocking that task from
running, until they expire.
In this case , the JPA-generated SQL looks ok, but the roller logs show what
looks like a transaction rolling back:
DEBUG 2008-11-21 11:47:00,097 CommonsLogFactory$LogAdapter:trace - Executing
query: [UPDATE TaskLock t SET t.timeLeased=?1 WHERE t.
name=?2 AND t.clientId=?3] with parameters: {3=ScheduledEntriesTask, 2=0,
1=devel-roller01}
DEBUG 2008-11-21 11:47:00,097 CommonsLogFactory$LogAdapter:trace - <t 6810846,
conn 4959010> executing prepstmnt 20488940 UPDATE ro
ller_tasklock t0 SET timeleased = ? WHERE (t0.name = ? AND t0.client = ?)
[params=(int) 0, (String) ScheduledEntriesTask, (String)
devel-roller01]
DEBUG 2008-11-21 11:47:00,098 CommonsLogFactory$LogAdapter:trace - <t 6810846,
conn 4959010> [0 ms] spent
DEBUG 2008-11-21 11:47:00,098 RollerTaskWithLeasing:run - ScheduledEntriesTask:
Lease released, task finished
DEBUG 2008-11-21 11:47:00,109 CommonsLogFactory$LogAdapter:trace - <t 6810846,
conn 4959010> [10 ms] rollback *******
DEBUG 2008-11-21 11:47:00,109 CommonsLogFactory$LogAdapter:trace - <t 6810846,
conn 4959010> [0 ms] close
Is the line flagged '******' a transaction rolling back?
If so, does anyone have any clue where I start looking to find out why JPA did
that?
I suppose I could work around this by setting interval == leaseTime, but this
is a multi-server cluster
and I've got enough headaches without adding race conditions into the mix :)
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
