Troubleshooting "Expression builder fails to load" Issue in Azure Data Factory

Why is the Expression builder failing to load?

Question

While working with pipelines in Azure Data Factory, you get an issue “Expression builder fails to load”

What might be the possible reason behind it? (Select the option that suits best)

Answers

Explanations

Click on the arrows to vote for the correct answer

A. B. C. D. E.

Correct Answer: B

The expression builder can fail to load because of network or cache issues with the web browser.

This problem can be resolved by upgrading the web browser to the latest updated version of the supported browser, clearing cookies for the site, and refreshing the page.

Option A is incorrect.

Chaining so many activities result in error “Code":"BadRequest","message":"ErrorCode=FlowRunSizeLimitExceeded.

Option B is correct.

The expression builder can fail to load because of network or cache issues with the web browser.

Option C is incorrect.

Not implementing time to live feature for Data Flow or optimized SHIR results in Longer startup times for activities in ADF Copy and Data Flow.

Option D is incorrect.

The given is the possible cause of Hitting capacity issues in SHIR.

Option E is incorrect.

It is the "DelimitedTextMoreColumnsThanDefined" error which is generally returned when the folder you are copying has filed with different schemas.

Reference:

To know more about troubleshooting pipeline orchestration and triggers in Azure Data Factory, please visit the below-given link:

The issue "Expression builder fails to load" in Azure Data Factory pipelines can have several possible reasons, but the most likely ones are:

B. Network or cache issues with the web browser: The expression builder in Azure Data Factory is a web-based interface that allows users to create complex expressions to manipulate data. If there are network connectivity issues, or if the web browser's cache is not updated, then the expression builder may fail to load properly.

E. Files in a folder with different schema: When working with files in Azure Data Factory, it is important to ensure that all the files have the same schema (i.e., the same structure and field types). If there are files in a folder with different schemas, then the expression builder may fail to load because it cannot determine the schema for the data.

The other options (A, C, and D) are less likely to cause the issue "Expression builder fails to load."

A. Chaining so many activities: While chaining many activities together in a pipeline can make it more complex and harder to troubleshoot, it should not cause the expression builder to fail to load.

C. Not implementing time to live feature for Data Flow or optimized SHIR: Time to live (TTL) is a feature in Azure Data Factory that allows users to set a timeout for data flows or optimized SHIR. Not implementing this feature should not cause the expression builder to fail to load.

D. Not scaling up SHIR according to your workload: SHIR (Self-Hosted Integration Runtime) is a component in Azure Data Factory that allows users to connect to on-premises data sources. Not scaling up SHIR according to the workload may cause performance issues, but it should not cause the expression builder to fail to load.

Therefore, B and E are the most likely reasons for the issue "Expression builder fails to load" in Azure Data Factory pipelines. To resolve the issue, you can try clearing the web browser cache, checking the network connectivity, or ensuring that all the files in the folder have the same schema.