https://community.databricks.com/t5/data-engineering/unable-to-run-any-commands-on-the-cluster/m-p/19573#M13139 <P>The typical reason for this issue is a library conflict crashing the Python shell. It's possible that a working cluster can run into this problem all of a sudden. This is because with a cluster restart libraries are fetched from the respective repositories. if there is a newer version&nbsp;</P><P>Identifying the problematic library is the first thing to resolve the issue. There is no easy way to identify the problematic library. It has to be a trial and error method. Uninstall each library, one at a time, and see if the issue persists.&nbsp;</P><P></P> Fri, 25 Jun 2021 16:16:31 GMT brickster_2018 2021-06-25T16:16:31Z https://community.databricks.com/t5/data-engineering/unable-to-run-any-commands-on-the-cluster/m-p/19572#M13138 <P>All the commands get canceled. even 1+1 is failing, the cluster is completely unusable. </P><P></P> Fri, 25 Jun 2021 16:16:09 GMT https://community.databricks.com/t5/data-engineering/unable-to-run-any-commands-on-the-cluster/m-p/19572#M13138 brickster_2018 2021-06-25T16:16:09Z https://community.databricks.com/t5/data-engineering/unable-to-run-any-commands-on-the-cluster/m-p/19573#M13139 <P>The typical reason for this issue is a library conflict crashing the Python shell. It's possible that a working cluster can run into this problem all of a sudden. This is because with a cluster restart libraries are fetched from the respective repositories. if there is a newer version&nbsp;</P><P>Identifying the problematic library is the first thing to resolve the issue. There is no easy way to identify the problematic library. It has to be a trial and error method. Uninstall each library, one at a time, and see if the issue persists.&nbsp;</P><P></P> Fri, 25 Jun 2021 16:16:31 GMT https://community.databricks.com/t5/data-engineering/unable-to-run-any-commands-on-the-cluster/m-p/19573#M13139 brickster_2018 2021-06-25T16:16:31Z https://community.databricks.com/t5/data-engineering/unable-to-run-any-commands-on-the-cluster/m-p/19574#M13140 <P>More details on similar issues here: <A href="https://kb.databricks.com/python/python-command-cancelled.html" target="test_blank">https://kb.databricks.com/python/python-command-cancelled.html</A></P> Fri, 25 Jun 2021 16:16:58 GMT https://community.databricks.com/t5/data-engineering/unable-to-run-any-commands-on-the-cluster/m-p/19574#M13140 brickster_2018 2021-06-25T16:16:58Z