File /user/root/lxq/input/mongodb.txt._COPYING_ could only be replicated to 0 nodes instead of minReplication (=1). There are 0 datanode(s) running and no node(s) are excluded in this operation.
File /user/root/lxq/input/mongodb.txt._COPYING
阅读背景：
求解hadoop fs -put 上传文件出错
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