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Posted to issues@commons.apache.org by "Erol Guven (Jira)" <ji...@apache.org> on 2021/02/25 17:39:00 UTC

[jira] [Created] (DBCP-572) timed out connections remain active in the pool

Erol Guven created DBCP-572:
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             Summary: timed out connections remain active in the pool
                 Key: DBCP-572
                 URL: https://issues.apache.org/jira/browse/DBCP-572
             Project: Commons DBCP
          Issue Type: Bug
    Affects Versions: 2.8.0
            Reporter: Erol Guven


when the database does not respond within a time-out period, the connection pool seems to still keep the connection in its pool and consider it active. These active connections are never closed and seems to be kept in the pool forever.

To reproduce:
 * create a BasicDataSource
 * suspend the database process using {{kill -STOP}} signal
 * get a connection from multiple threads simultaneously which will timeout
 * inspect org.apache.commons.pool2.impl.GenericObjectPool.getNumActive()

The active count is equivalent to the number of timed out connections.

The active count never goes down.



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