@Override protected GlobalLock doLock(final String lockName) { Connection connection = null; boolean obtained = false; try { connection = dataSource.getConnection(); obtained = globalLockDao.lock(connection, lockName, timeout, timeUnit); if (obtained) { final GlobalLock lock = getGlobalLock(connection, lockName, new ResetReentrantLockCallback() { @Override public boolean reset(final String lockName) { return lockTable.releaseLock(lockName); } }); lockTable.createLock(lockName, lock); return lock; } } catch (final SQLException e) { logger.warn("Unable to obtain lock for {}", lockName, e); } finally { if (!obtained && connection != null) { try { connection.close(); } catch (final SQLException e) { logger.warn("Unable to close connection", e); } } } return null; }