Jedis : Could not get a resource from the pool

Background

Our application uses Jedis-2.2.1 and connects to Redis-2.6, here's how I get jedis resource :

protected static JedisWrapper getRedisUserWrite(String UDID) {        if (redisUserWritePools.get(0) == null) init();        int hash = hash(UDID);        Jedis jedis = redisUserWritePools.get(hash).getResource();        jedis.select(dbs.get("redisUserWritePools"+ hash));        return new JedisWrapper(jedis, redisUserWritePools.get(hash));    }

And this is my JedisWrapper(Unify the management of resources):

public class JedisWrapper {    private Jedis jedis;    private JedisPool pool;    public JedisWrapper(Jedis jedis, JedisPool pool) {        this.jedis = jedis;        this.pool = pool;    }    public Jedis get(){        return this.jedis;    }    public void returnResource() {        if(null != this.jedis){            this.pool.returnResource(this.jedis);        }    }    public void returnBrokenResource() {        if(null != this.jedis) {            this.pool.returnBrokenResource(this.jedis);        }        this.jedis = null;    }}

JedisWrapper is the container if Jedis instance, here's how I use it :

private static void cacheSDKIDs(String UDID, String[] SDKIDs) {        JedisWrapper wrapper = getRedisUserWrite(UDID);        try {            if (SDKIDs != null) {                wrapper.get().del(UDID);                wrapper.get().sadd(UDID, SDKIDs);            }        } catch (JedisConnectionException e) {            e.printStackTrace();            wrapper.returnBrokenResource();        }catch (Exception e) {            e.printStackTrace();        } finally {            wrapper.returnResource();        }    }

Note that, SKDIDs maybe very large(e.g. could reach the maximum of 8KB).

Here's the problem

Every time I restart our application, all redis connections are normal, but several hours later, the Could not get a resource from the pool Exception comes out. And frequency become higher and higher, then all the connections to Redis are disconnected and can create new connection.

Here's my configuration :

<bean id = "redisConfig" class="redis.clients.jedis.JedisPoolConfig"><property name="maxActive"  value="400" /><property name="maxIdle" value="100" /><property name="minIdle" value="20" /><property name="maxWait" value="4000" /><property name="testOnBorrow"  value="true"/><property name="testOnReturn" value="true" /></bean>

Exception Stacktrace:

Caused by: redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool    at redis.clients.util.Pool.getResource(Pool.java:40)    at com.xxxice.redis.BaseRedis.getRedisUserWrite(BaseRedis.java:158)    at com.xxx.service.redis.DeviceRedis.cacheSDKIds(DeviceRedis.java:128)    at com.xxx.redis.DeviceRedis.cacheDevice(DeviceRedis.java:65)    at com.xxx.service.DeviceService.update(DeviceService.java:88)    at com.xxx.controller.Devices.update(Devices.java:25)    ... 32 moreCaused by: java.util.NoSuchElementException: Timeout waiting for idle object    at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1174)    at redis.clients.util.Pool.getResource(Pool.java:38)    ... 37 more