[SPARK-45631] Broken backward compatibility in PySpark: StreamingQueryListener due to the addition of onQueryIdle

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 3.5.0, 4.0.0
• Fix Version/s: 4.0.0, 3.5.1
• Component/s: Structured Streaming
• Labels: pull-request-available
• Assignee: Jungtaek Lim
• Reporter: Jungtaek Lim
• Created: 23/Oct/23 06:13
• Updated: 23/Oct/23 12:25
• Resolved: 23/Oct/23 12:25

Description

We observed the issue that existing StreamingQueryListener implementations in PySpark start to fail after upgrading to 3.5.0. We identified that the root cause is https://issues.apache.org/jira/browse/SPARK-43183 since onQueryIdle was defined as `@abstractmethod`, requiring all exiting implementations to implement the method.

It seems like abstractmethod annotation should be removed to retain backward compatibility.

Issue Links

• links to: GitHub Pull Request #43483