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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4478) Use AtomicLong for XactFactory.tranId
Date Tue, 15 Dec 2009 14:49:18 GMT
Use AtomicLong for XactFactory.tranId

                 Key: DERBY-4478
                 URL: https://issues.apache.org/jira/browse/DERBY-4478
             Project: Derby
          Issue Type: Improvement
          Components: Store
    Affects Versions:
            Reporter: Knut Anders Hatlen
            Priority: Minor

Dyre Tjeldvoll posted some results on DERBY-3092 that indicated that some types of load might
cause contention on XactFactory.tranId (a shared long), and suggested that it was replaced
with a java.util.concurrent.atomic.AtomicLong on the platforms that support java.util.concurrent.*.

I'm splitting this issue out from DERBY-3092 so that the two possible improvements reported
there can be addressed independently.

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