Merge pull request #174097 from Clare-Zheng82/0930-Add_new_TSG_to_Activity_Databricks

Add one new TSG to Activities-Azure Databricks section

Author: PMEds28

articles/data-factory/data-factory-troubleshoot-guide.md

@@ -7,7 +7,7 @@ ms.service: data-factory
 ms.subservice: troubleshooting
 ms.custom: synapse
 ms.topic: troubleshooting
-ms.date: 09/26/2021
+ms.date: 09/30/2021
 ms.author: abnarain
 ---
 
@@ -137,6 +137,20 @@ For connector issues such as an encounter error using the copy activity, refer t
 
 - **Recommendation**: If you're using a self-hosted integration runtime, make sure that the network connection is reliable from the integration runtime nodes. If you're using Azure integration runtime, retry usually works.
 
+### The Boolean run output starts coming as string instead of expected int
+
+- **Symptoms**: Your Boolean run output starts coming as string (for example, `"0"` or `"1"`) instead of expected int (for example, `0` or `1`).
+
+   :::image type="content" source="media/data-factory-troubleshoot-guide/databricks-pipeline.png" alt-text="Screenshot of the Databricks pipeline.":::
+
+    You noticed this change on September 28, 2021 at around 9 AM IST when your pipeline relying on this output started failing. No change was made on the pipeline, and the Boolean output had been coming as expected before the failure. 
+
+   :::image type="content" source="media/data-factory-troubleshoot-guide/old-and-new-output.png" alt-text="Screenshot of the difference in the output.":::
+
+- **Cause**: This issue is caused by a recent change, which is by design. After the change, if the result is a number that starts with zero, Azure Data Factory will convert the number to the octal value, which is a bug. This number is always 0 or 1, which never caused issues before the change. So to fix the octal conversion, the string output is passed from the Notebook run as is. 
+
+- **Recommendation**: Change the **if** condition to something like `if(value=="0")`.
+
 ## Azure Data Lake Analytics
 
 The following table applies to U-SQL.