kylin的mapreduce任务都会去尝试连接zookeeper,但是是这样连接的:2015-11-13 12:37:37,886 INFO 
[main-SendThread(localhost:2181)] org.apache.zookeeper.ClientCnxn: Opening 
socket connection to server localhost/127.0.0.1:2181. Will not attempt to 
authenticate using SASL (unknown 
error),使用的是localhost并不是zookeeper集群中的机器,所以mapreduce如果datanode与zookeeper集群在一个上就能成功,否则失败,这一阶段发生在Convert
 Cuboid Data to HFile 阶段

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