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https://issues.apache.org/jira/browse/DBCP-318?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebb resolved DBCP-318.
-----------------------
Resolution: Fixed
URL: http://svn.apache.org/viewvc?rev=896195&view=rev
Log:
DBCP-318 PerUserPoolDataSource.getPooledConnectionAndInfo multi-threading bug
N.B. Also added a check in private method registerPool(String, String) to throw
IllegalStateException if the key already existed in the pool.
> PerUserPoolDataSource.getPooledConnectionAndInfo multi-threading bug
> --------------------------------------------------------------------
>
> Key: DBCP-318
> URL: https://issues.apache.org/jira/browse/DBCP-318
> Project: Commons Dbcp
> Issue Type: Bug
> Reporter: Sebb
>
> PerUserPoolDataSource.getPooledConnectionAndInfo(user,pass) has the code:
> {code}
> Object pool = pools.get(key); // (1) pools = instance variable
> synchronized(this) {
> if (pool == null) {
> try {
> registerPool(username, password);
> pool = pools.get(key);
> [...]
> {code}
> The first get() call can return null to multiple threads, so multiple threads
> can register the pool.
> This allows more than maxActive() connections to be returned.
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