ed exception is redis.clients.jedis.exceptions.JedisConnectionException: Unknown reply: O 异常处理记录

nested exception is redis.clients.jedis.exceptions.JedisConnectionException: Unknown reply: O 异常处理记录

前几天修改redis中value 的时间时遇到了个坑，使用的是redis版本 2.4.1 + spring-data-redis-1.6.0 服务端使用的是twemproxy。具体操作是 原来value 的过期时间为 3600*24 *7 单位是 TimeUnit.SECONDS (7天)  。现在要求修改为30天，我直接修改3600*24 *30 单位保持不变。不过通过查阅资料和翻看源码。找到了问题所在，在这里记录下。异常如下：

Unknown reply: O; nested exception is redis.clients.jedis.exceptions.JedisConnectionException: Unknown reply: O
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: Unknown reply: O
at redis.clients.jedis.Protocol.process(Protocol.java:128)
at redis.clients.jedis.Protocol.read(Protocol.java:187)
at redis.clients.jedis.Connection.getIntegerReply(Connection.java:201)
at redis.clients.jedis.BinaryJedis.expire(BinaryJedis.java:330)
at org.springframework.data.redis.connection.jedis.JedisConnection.expire(JedisConnection.java:807)
at org.springframework.data.redis.core.RedisTemplate7.doInRedis(RedisTemplate.java:647)atorg.springframework.data.redis.core.RedisTemplate7.doInRedis(RedisTemplate.java:640)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:191)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:153)
at org.springframework.data.redis.core.RedisTemplate.expire(RedisTemplate.java:640)
at com.youku.ddshow.service.impl.UserDeviceTokenServiceImpl.addUserDeviceToken(UserDeviceTokenServiceImpl.java:32)
at com.youku.ddshow.service.impl.UserDeviceTokenServiceImpl.updateUserDeviceToken(UserDeviceTokenServiceImpl.java:66)
at com.youku.ddshow.service.MACTokenHandler.getMACToken4Logined(MACTokenHandler.java:95)
… 37 more

通过跟踪代码发现是 RedisTemplate.expire 出现异常。

 public Boolean expire(K key, final long timeout, final TimeUnit unit) {        final byte[] rawKey = this.rawKey(key);        final long rawTimeout = TimeoutUtils.toMillis(timeout, unit);        return (Boolean)this.execute(new RedisCallback() {            public Boolean doInRedis(RedisConnection connection) {                try {                    return connection.pExpire(rawKey, rawTimeout);                } catch (Exception var3) {                    return connection.expire(rawKey, TimeoutUtils.toSeconds(timeout, unit));                }            }        }, true);    }//这里使用了twemproxy 是不支持Time的操作，故抛出异常使用connection.expire处理，此处是个坑    public Boolean pExpire(byte[] key, long millis) {        if(millis > 2147483647L) {            return this.pExpireAt(key, this.time().longValue() + millis);        } else {            try {                if(this.isPipelined()) {                    this.pipeline(new JedisConnection.JedisResult(this.pipeline.pexpire(key, (int)millis), JedisConverters.longToBoolean()));                    return null;                } else if(this.isQueueing()) {                    this.transaction(new JedisConnection.JedisResult(this.transaction.pexpire(key, (int)millis), JedisConverters.longToBoolean()));                    return null;                } else {                    return JedisConverters.toBoolean(this.jedis.pexpire(key, (int)millis));                }            } catch (Exception var5) {                throw this.convertJedisAccessException(var5);            }        }    }//跳到这里继续执行 注意参数 是秒 long seconds   public Boolean expire(byte[] key, long seconds) {        if(seconds > 2147483647L) {            return this.pExpireAt(key, this.time().longValue() + TimeUnit.SECONDS.toMillis(seconds));        } else {            try {                if(this.isPipelined()) {                    this.pipeline(new JedisConnection.JedisResult(this.pipeline.expire(key, (int)seconds), JedisConverters.longToBoolean()));                    return null;                } else if(this.isQueueing()) {                    this.transaction(new JedisConnection.JedisResult(this.transaction.expire(key, (int)seconds), JedisConverters.longToBoolean()));                    return null;                } else {                    return JedisConverters.toBoolean(this.jedis.expire(key, (int)seconds));//**执行此处**                }            } catch (Exception var5) {                throw this.convertJedisAccessException(var5);            }        }    }//通过继续向下找源码，终于找到抛出异常的代码  private static Object process(RedisInputStream is) {        try {            byte e = is.readByte();            if(e == 45) {                processError(is);                return null;            } else if(e == 42) {                return processMultiBulkReply(is);            } else if(e == 58) {                return processInteger(is);            } else if(e == 36) {                return processBulkReply(is);            } else if(e == 43) {                return processStatusCodeReply(is);            } else {                throw new JedisConnectionException("Unknown reply: " + (char)e);            }        } catch (IOException var2) {            throw new JedisConnectionException(var2);        }    }

对照ASCII码表 O 代码 77 不是这几个常量，其实还是通信错误导致。

然后修改TimeUnit.DAYS 30 问题解决。

参考: http://irfen.me/redis-expire-exception