[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: Thread usage in AIO layer

[clebert.suconic@jboss.com]

"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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