Reduce use of synchronized collections in GenericLanguageConnectionContext
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                 Key: DERBY-2150
                 URL: http://issues.apache.org/jira/browse/DERBY-2150
             Project: Derby
          Issue Type: Improvement
          Components: Performance, SQL
    Affects Versions: 10.3.0.0
            Reporter: Knut Anders Hatlen
            Priority: Minor


In org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext, it is 
probably safe to replace some of the synchronized collections with 
unsynchronized ones. This should be investigated, and the unnecessary 
synchronization should be removed. See discussion here: 
http://www.nabble.com/Use-of-synchronized-containers-in-engine-code-tf2754469.html

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