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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 | ||
| + | </ | ||
