[jbossts-issues] [JBoss JIRA] (JBTM-1712) perf problem in FileSystemStore.openAndLock
Mark Little (JIRA)
jira-events at lists.jboss.org
Sat May 25 17:18:07 EDT 2013
[ https://issues.jboss.org/browse/JBTM-1712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mark Little updated JBTM-1712:
------------------------------
Affects Version/s: 5.0.0.M2
> perf problem in FileSystemStore.openAndLock
> -------------------------------------------
>
> Key: JBTM-1712
> URL: https://issues.jboss.org/browse/JBTM-1712
> Project: JBoss Transaction Manager
> Issue Type: Enhancement
> Security Level: Public(Everyone can see)
> Components: Transaction Core
> Affects Versions: 4.16.4, 5.0.0.M2
> Reporter: Jonathan Halliday
> Assignee: Mark Little
>
> if(!file.exits())
> {
> if(createHierarchy(file))
> incorrectly calls the expensive (because synchronized) createHierarchy method in the common case where the file does not exist (because it's a uniq named new tx record) but the directory hierarchy does (because it's the create-once hashed dir tree). This causes excessive contention on the FileSystemStore instance object monitor lock. Should probably be something more like
> if(!file.getParent().exists())
> {
> if(createHierarchy(file))
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