Add/modify HDFS node

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This topic contains 2 replies, has 2 voices, and was last updated by  Trang Nguyen 2 years, 6 months ago.

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  • #13235

    Trang Nguyen
    Member

    Hi,

    I have a question on cluster upgrade:

    – I have a 6 node cluster and went with the default installation which allocated 3 nodes as DN. I would to allocate one of the remaining existing nodes as a DN also. Is it possible to do this by changing the existing allocation and rerunning HMC installation?

    – Is it possible to increase the storage allocation of an existing DN via HMC?

    Thanks,
    Trang

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  • #13257

    Trang Nguyen
    Member

    Thanks Ted!

    Trang

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    #13253

    tedr
    Member

    Hi Trang,

    The amount of space on a datanode is controlled by the Linux filesystem, not HMC. HDFS will report availability of all space that the base Linux file system shows as available to the mount point that hadoop was installed on.

    Regards,
    Ted.

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