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— | hdfs_dfsadmin [2016/04/19 00:22] (current) – created - external edit 127.0.0.1 | ||
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+ | ====== dfsadmin ====== | ||
+ | * [[Hadoop]] | ||
+ | * [[HDFS]] | ||
+ | |||
+ | * [[https:// | ||
+ | |||
+ | ** Put the cluster in Safemode: ** | ||
+ | |||
+ | < | ||
+ | hdfs dfsadmin -safemode enter | ||
+ | </ | ||
+ | |||
+ | ** Recommission or decommission DataNode(s): | ||
+ | |||
+ | < | ||
+ | hdfs dfsadmin -refreshNodes | ||
+ | </ | ||
+ | |||
+ | ** Get information about your HDFS filesystem: ** | ||
+ | |||
+ | < | ||
+ | hdfs dfsadmin -report | ||
+ | </ | ||
+ | |||
+ | ** Check the status of the nodes in the rack ** | ||
+ | |||
+ | < | ||
+ | hdfs dfsadmin -printTopology | ||
+ | </ |