还有一个secondarynamenode,它不是 namenode的冗余守护进程,而是提供周期检查点和清理任务。
There's also a secondary namenode, which isn't a redundant daemon for the namenode but instead provides period checkpointing and housekeeping tasks.
还有一个secondarynamenode,它不是 namenode的冗余守护进程,而是提供周期检查点和清理任务。
There's also a secondary namenode, which isn't a redundant daemon for the namenode but instead provides period checkpointing and housekeeping tasks.
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