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socket missing on DN

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socket missing on DN

Master Collaborator

Hi,

 after a restart of two DN from the HDFS the Impala daemon refused to start becuase it was not able to access /var/run/hdfs-sockets/dn. I verified the directory, and the socket is not there. I checked other DN hosts and there the socket directory is created. 

 

I had to start the Impala, so I turned off short circuit reads, but my question is how to re-create these socket directories? Just with a restart of the HDFS? 

Does anybody had a similar experience?

Thanks

 

CDH5.15

1 ACCEPTED SOLUTION

Accepted Solutions

Re: socket missing on DN

Master Collaborator
The DN process was not running, so the restart of the whole HDFS resolved the issue and the directory (socket) was created on every data node
2 REPLIES 2

Re: socket missing on DN

Master Collaborator
The DN process was not running, so the restart of the whole HDFS resolved the issue and the directory (socket) was created on every data node

Re: socket missing on DN

Guru
Hi Tomas,

Thanks for providing the solution. Can you please accept your findings as the solution so that it would be obvious to other community users?

Cheers