setrep
Usage: hadoop fs -setrep [-R] <path>
Changes the replication factor of a file. -R option is for recursively increasing the replication factor of files within a directory.
Example:
hadoop fs -setrep -w 3 -R /user/hadoop/dir1
Exit Code:
Returns 0 on success and -1 on error.
1条答案
按热度按时间weylhg0b1#
https://hadoop.apache.org/docs/r0.18.3/hdfs_shell.html
以下命令的定义：
可以更改特定文件的复制因子，因此显然不需要重新启动守护程序。复制因子的全部用途是，如果其中一个数据节点关闭，并且某些文件的复制因子值低于所需值，则会自动重新应用这些文件。