[JBoss JIRA] (JGRP-1912) LockService can fail under heavy load
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[
https://issues.jboss.org/browse/JGRP-1912?page=com.atlassian.jira.plugin....
]
Bela Ban edited comment on JGRP-1912 at 2/19/15 6:14 AM:
---------------------------------------------------------
Why's {{CENTRAL_LOCK}} so far down in the stack ? That makes it unreliable, so
{{GRANT_LOCK}} requests sent to the coordinator might simply get dropped and therefore a
{{tryLock()}} could run into a timeout.
The documentation [1] recommends this (see last paragraph in 4.6).
[1] http://www.jgroups.org/manual/index.html#LockService
was (Author: belaban):
Why's {{CENTRAL_LOCK}} so far down in the stack ? That makes it unreliable, so
{GRANT_LOCK} requests sent to the coordinator might simply get dropped and therefore a
tryLock() could run into a timeout.
LockService can fail under heavy load
-------------------------------------
Key: JGRP-1912
URL: https://issues.jboss.org/browse/JGRP-1912
Project: JGroups
Issue Type: Bug
Affects Versions: 3.6.1
Environment: both windows 8.1 and RHEL
java 1.7.0_75
Reporter: Chris Gentile
Assignee: Bela Ban
Fix For: 3.6.3
Attachments: LockServiceTestClient.java, LockServiceTestClient.java, logFile,
logFile2, runLockServiceTestClient.sh, udp.xml
Once in awhile, the LockService will get stuck acquiring a lock.
These seems to occur most often when two threads are simultaneously trying to acquire the
same lock. (i.e.: exact same millisecond on a server with multiple processors).
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Bela Ban (JIRA)