[jbossts-issues] [JBoss JIRA] (JBTM-1712) perf problem in FileSystemStore.openAndLock
Jonathan Halliday (JIRA)
jira-events at lists.jboss.org
Fri May 24 09:18:06 EDT 2013
Jonathan Halliday created JBTM-1712:
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Summary: 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
Reporter: Jonathan Halliday
Assignee: Tom Jenkinson
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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