Redis 中spark参数executor-cores引起的异常解决办法
报错信息
Unexpected end of stream
16/10/11 16:35:50 WARN TaskSetManager: Lost task 63.0 in stage 3.0 (TID 212, gzns-arch-spark04.gzns.iwm.name): redis.clients.jedis.exceptions.JedisConnectionException: Unexpected end of stream. at redis.clients.util.RedisInputStream.ensureFill(RedisInputStream.java:199) at redis.clients.util.RedisInputStream.readByte(RedisInputStream.java:40) at redis.clients.jedis.Protocol.process(Protocol.java:151) at redis.clients.jedis.Protocol.read(Protocol.java:215) at redis.clients.jedis.Connection.readProtocolWithCheckingBroken(Connection.java:340) at redis.clients.jedis.Connection.getBinaryMultiBulkReply(Connection.java:276) at redis.clients.jedis.Connection.getMultiBulkReply(Connection.java:269) at redis.clients.jedis.Jedis.hmget(Jedis.java:723)
DENIED Redis is running in protected mode because protected mode is enabled
DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside. at redis.clients.jedis.Protocol.processError(Protocol.java:127) at redis.clients.jedis.Protocol.process(Protocol.java:161) at redis.clients.jedis.Protocol.read(Protocol.java:215)
解决过程
我尝试重启redis,更换redis新jar包,关闭redis保护模式都于事无补,后来找了下错误的原因,无意中看到了Unexpected end of stream是说有一个进程占用了redis的链接,头脑一炸,才发现自己把executor-cores设置为了2,然后把该值设置为1后,正常了。
看来只有等接入redis集群后,我才能修改该值了。
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