@Override
public Set<String> getAllIdentifiers(String identifierScheme) {
initIfNecessary();
Jedis jedis = _jedisPool.getResource();
Set<String> allMembers = jedis.smembers(generatePerSchemeKey(identifierScheme));
_jedisPool.returnResource(jedis);
s_logger.info("Loaded {} identifiers from Jedis (full contents in Debug level log)", allMembers.size());
if (s_logger.isDebugEnabled()) {
s_logger.debug("Loaded identifiers from Jedis: {}", allMembers);
}