Why does running a query in Panther Data Explorer cause my page to crash or become unresponsive?

Issue

For some queries, clicking "Run" in the Data Explorer causes the browser tab to freeze, or even close abruptly. In some cases, I see a popup in the browser warning that the tab has crashed. If I close the tab and then look at my query history, I see the query succeed, but navigating to the query results will crash again.

Resolution

To resolve this issue, try running your query again, but with the following adjustments:

• Add a reasonable LIMIT, for example LIMIT10

• If you are using SELECT * FROM , change your query to select specific columns instead.

  •  For example: SELECT specificColumn FROM

• If you are already selecting specific columns, try to reduce the number of columns returned. 

• If you are using ORDER BY, try to time bound your query as well. For example p_occurs_since('24 hours')

Cause

This behavior is commonly caused by either a large amount of rows returned, or by a large amount of data within a row. 

The most common scenario where this issue occurs is if you try to perform a SELECT * FROM panther_monitor.public.classification_failures table because this table has a payload column which can contain a lot of data.