NameNode metadata service

to create new topics or reply. | New User Registration

This topic contains 5 replies, has 3 voices, and was last updated by  Larry Liu 2 years, 2 months ago.

  • Creator
    Topic
  • #17885

    Artem Arapov
    Member

    I’m trying to load some data from Sandbox, but keep getting error “sandbox/192.168.100.128:8020 Connection refused”. Tried to restart Sandbox and namenode service several times, but “telnet 192.168.100.128 8020″ saying “connection refused”.
    Has anyone had this issue?

Viewing 5 replies - 1 through 5 (of 5 total)

You must be to reply to this topic. | Create Account

  • Author
    Replies
  • #18145

    Larry Liu
    Moderator

    Hi, Artem

    I did some test that my other VM running on NAT can’t talk to NAT ip on sandbox. But it can talk to the host-only interface.

    I think this is how VM works.

    Larry

    Collapse
    #18139

    Artem Arapov
    Member

    Greetings,
    i found out that namenode listened port 8020 on ip-address that belongs “host-only” VM network adapter. But connection with Aster was set up on another VM adapter (“NAT”), since sandbox has 2 of them by default. Switching connection to the host-only network resolved the issue and now it seems working fine. But it’s not a nice solution, it would be better to switch listener to desired ip-address. Does anyone know how to do that? Like command or config file?

    Thanks for your help.

    Collapse
    #18110

    Larry Liu
    Moderator

    Hi, Artem

    Is your Aster Espress VM up running? If it is, can you try to turn it off and try again?

    Larry

    Collapse
    #18033

    Artem Arapov
    Member

    Hi Seth,
    I have an Aster Express VM in the same network. I can obtain metadata from Sandbox via WebHCat Server (port 50111), but unable to load data.

    Collapse
    #17892

    Seth Lyubich
    Keymaster

    Hi Artem,

    Can you please clarify how you are connecting to sandbox address 192.168.100.128:8020? Do you have hadoop client installed somewhere else? In general this error looks like firewall or network issue.

    Thanks,
    Seth

    Collapse
Viewing 5 replies - 1 through 5 (of 5 total)
Hortonworks Data Platform
The Hortonworks Data Platform is a 100% open source distribution of Apache Hadoop that is truly enterprise grade having been built, tested and hardened with enterprise rigor.
Get started with Sandbox
Hortonworks Sandbox is a self-contained virtual machine with Apache Hadoop pre-configured alongside a set of hands-on, step-by-step Hadoop tutorials.
Modern Data Architecture
Tackle the challenges of big data. Hadoop integrates with existing EDW, RDBMS and MPP systems to deliver lower cost, higher capacity infrastructure.