Take the CentOS 7 system as an example. Generally, upload and download use third-party tools, but it is not convenient to operate. You have to find the corresponding directory every time to perform
Tag: Ten
Ten, HDFS NameNode work mechanism
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txid:< br>namenode gives a unique id for each operation event (addition, deletion, modification operation), called txid, which is generally incremented from 0. For each additional opera