Socket timeout errors -- socket.timeout: The read operation timed out

Starting in Arcadia 4.4 we have introduced additional timeout settings within the connection settings, in particular a new socket timeout.

For background, refer to this article on the existing settings:

This socket timeout will ensure we close & clean up hung connections. The default value is “60” seconds, but it’s possible that some operations can take a long time – for example planning a query on a really large table after a ‘invalidate metadata’ command – so there might be instances where you need to adjust the default to higher values like 120 or 180 seconds.

The errors you should look out for are:

  • In the UI you might see “Could not load data – operation timed out”


  • In the arcviz activitly logs you see “socket timeout” :

    ERROR P3 26381 Thread-25 Exception on thrift op
    Traceback (most recent call last):
    File “arcweb/dataconn/”, line 640, in _onethrift
    File “/opt/cloudera/parcels/ARCADIAENTERPRISE-”, line 627, in read
    v =
    socket.timeout: The read operation timed out

1 Like