[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: Thread usage in AIO layer
clebert.suconic@jboss.com
do-not-reply at jboss.com
Fri Aug 29 09:49:45 EDT 2008
"timfox" wrote : Can't completions come in for a previous file once we've already moved to the next file?
Yes...
When the journal needs a new file it will:
- Immediately return the next file (cached). Writes will start on the next file without any waits.
In an executor:
A- It will wait the pending writes to finish before it can close the file, and then close the file (This won't affect any of the transactions. It's just that I need to wait executions to finish before I can close the file or I would loose data)
B- It will place another file back to the nextOpenFile cache.
I have tested this and I didn't see any latency because of that.
BTW: (A) is being tested under one of the integration tests, as this used to cause a crash on the native layer before Alpha.
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