https://community.databricks.com/t5/data-engineering/hyperopt-error-there-are-no-evaluation-tasks-cannot-return/m-p/45254#M27831 <P>The trials succeed when the cell in the notebook is executed manually:</P><DIV><DIV><DIV class=""><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="01.png" style="width: 658px;"><img src="https://community.databricks.com/t5/image/serverpage/image-id/3814i5AC96A61B79F39A9/image-size/large/is-moderation-mode/true?v=v2&amp;px=999" role="button" title="01.png" alt="01.png" /></span></DIV></DIV></DIV><P>However, the same process fails when executed as a Workflow:</P><DIV><DIV>&nbsp;</DIV><DIV><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="02.png" style="width: 439px;"><img src="https://community.databricks.com/t5/image/serverpage/image-id/3812i25FFD86761E945BD/image-size/large/is-moderation-mode/true?v=v2&amp;px=999" role="button" title="02.png" alt="02.png" /></span></DIV></DIV><P>The error simply says that there's an issue with the objective function. However how can that be the case if I'm able to successfully run the exact same code when I manually run the notebook cell? The notebook run fails when triggered through a Workflow run.</P><P>Unfortunately, changing compute cluster had no effect either.</P><P>Task fails with the following error: <SPAN class="">Exception: There are no evaluation tasks, cannot return argmin of task losses.</SPAN></P> Mon, 18 Sep 2023 15:54:53 GMT ChingizK 2023-09-18T15:54:53Z https://community.databricks.com/t5/data-engineering/hyperopt-error-there-are-no-evaluation-tasks-cannot-return/m-p/45254#M27831 <P>The trials succeed when the cell in the notebook is executed manually:</P><DIV><DIV><DIV class=""><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="01.png" style="width: 658px;"><img src="https://community.databricks.com/t5/image/serverpage/image-id/3814i5AC96A61B79F39A9/image-size/large/is-moderation-mode/true?v=v2&amp;px=999" role="button" title="01.png" alt="01.png" /></span></DIV></DIV></DIV><P>However, the same process fails when executed as a Workflow:</P><DIV><DIV>&nbsp;</DIV><DIV><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="02.png" style="width: 439px;"><img src="https://community.databricks.com/t5/image/serverpage/image-id/3812i25FFD86761E945BD/image-size/large/is-moderation-mode/true?v=v2&amp;px=999" role="button" title="02.png" alt="02.png" /></span></DIV></DIV><P>The error simply says that there's an issue with the objective function. However how can that be the case if I'm able to successfully run the exact same code when I manually run the notebook cell? The notebook run fails when triggered through a Workflow run.</P><P>Unfortunately, changing compute cluster had no effect either.</P><P>Task fails with the following error: <SPAN class="">Exception: There are no evaluation tasks, cannot return argmin of task losses.</SPAN></P> Mon, 18 Sep 2023 15:54:53 GMT https://community.databricks.com/t5/data-engineering/hyperopt-error-there-are-no-evaluation-tasks-cannot-return/m-p/45254#M27831 ChingizK 2023-09-18T15:54:53Z https://community.databricks.com/t5/data-engineering/hyperopt-error-there-are-no-evaluation-tasks-cannot-return/m-p/97221#M39453 <P>I've run in to the same issue using SparkTrials.</P><P>Runs fine manually.</P><P>Runs using only Trials in the workflow.</P><P>Get this error when using SparkTrials.</P><P>I've tried dropping parallelism right down, making sure there's only one experiment on that cluster.</P><P>Did you get to the bottom of the issue?</P> Fri, 01 Nov 2024 13:37:40 GMT https://community.databricks.com/t5/data-engineering/hyperopt-error-there-are-no-evaluation-tasks-cannot-return/m-p/97221#M39453 honj 2024-11-01T13:37:40Z https://community.databricks.com/t5/data-engineering/hyperopt-error-there-are-no-evaluation-tasks-cannot-return/m-p/119564#M45912 <P>I have this exact same issue! Can anyone offer guidance?</P> Sun, 18 May 2025 21:19:13 GMT https://community.databricks.com/t5/data-engineering/hyperopt-error-there-are-no-evaluation-tasks-cannot-return/m-p/119564#M45912 LibertyEnergy 2025-05-18T21:19:13Z