https://community.databricks.com/t5/data-engineering/troubleshooting-autoloader/m-p/127603#M48028 <P>Hi there, I am running into a bit of an issue displaying some AutoLoader readStream data. Can I get some assistance to understand how to properly troubleshoot this? I've looked at logs before, but frankly it's not clear where to look exactly:</P><P>First, "No rows returned" comes up after a few seconds (5-10 seconds)</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ChristianRRL_2-1754495673026.png" style="width: 400px;"><img src="https://community.databricks.com/t5/image/serverpage/image-id/18776iEF2EA12F9AE0D1AA/image-size/medium?v=v2&amp;px=400" role="button" title="ChristianRRL_2-1754495673026.png" alt="ChristianRRL_2-1754495673026.png" /></span></P><P>Then, this error message comes up shortly after: "<SPAN>Error while trying to fetch latest data. Please check Driver logs.</SPAN>"</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ChristianRRL_1-1754495653701.png" style="width: 400px;"><img src="https://community.databricks.com/t5/image/serverpage/image-id/18775i1C99478A414DBAE9/image-size/medium?v=v2&amp;px=400" role="button" title="ChristianRRL_1-1754495653701.png" alt="ChristianRRL_1-1754495653701.png" /></span></P> Wed, 06 Aug 2025 15:56:31 GMT ChristianRRL 2025-08-06T15:56:31Z https://community.databricks.com/t5/data-engineering/troubleshooting-autoloader/m-p/127603#M48028 <P>Hi there, I am running into a bit of an issue displaying some AutoLoader readStream data. Can I get some assistance to understand how to properly troubleshoot this? I've looked at logs before, but frankly it's not clear where to look exactly:</P><P>First, "No rows returned" comes up after a few seconds (5-10 seconds)</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ChristianRRL_2-1754495673026.png" style="width: 400px;"><img src="https://community.databricks.com/t5/image/serverpage/image-id/18776iEF2EA12F9AE0D1AA/image-size/medium?v=v2&amp;px=400" role="button" title="ChristianRRL_2-1754495673026.png" alt="ChristianRRL_2-1754495673026.png" /></span></P><P>Then, this error message comes up shortly after: "<SPAN>Error while trying to fetch latest data. Please check Driver logs.</SPAN>"</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ChristianRRL_1-1754495653701.png" style="width: 400px;"><img src="https://community.databricks.com/t5/image/serverpage/image-id/18775i1C99478A414DBAE9/image-size/medium?v=v2&amp;px=400" role="button" title="ChristianRRL_1-1754495653701.png" alt="ChristianRRL_1-1754495653701.png" /></span></P> Wed, 06 Aug 2025 15:56:31 GMT https://community.databricks.com/t5/data-engineering/troubleshooting-autoloader/m-p/127603#M48028 ChristianRRL 2025-08-06T15:56:31Z https://community.databricks.com/t5/data-engineering/troubleshooting-autoloader/m-p/127634#M48038 <P>I'm also working with AutoLoader these days to create an ingestion pattern and troubleshooting it can be tricky.</P><P>I wonder if you could pick a single file (whose full path / location / uri you exactly know) and read it with<STRONG>out</STRONG> autoloader. Just with spark.read.json ... or SELECT * FROM JSON.`path`</P><P>If that fails then it's not an autoloader issue. If that works, that might help further troubleshooting. Sometimes the order of the .option blocks can have an impact (it shouldn't ...), I experienced that just yesterday so keep an eye out for that, too.</P> Wed, 06 Aug 2025 22:30:09 GMT https://community.databricks.com/t5/data-engineering/troubleshooting-autoloader/m-p/127634#M48038 MartinIsti 2025-08-06T22:30:09Z