question Re: socket missing on DN in Archives of Support Questions (Read Only)

socket missing on DN

Tomas79 — Fri, 16 Sep 2022 13:50:33 GMT

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

Re: socket missing on DN

Tomas79 — Mon, 29 Oct 2018 12:21:27 GMT

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

EricL — Sat, 03 Nov 2018 11:54:54 GMT

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