Internal error: Assertion failed: !self.finished: LimitedBatchCoalescer: cannot push batch after finish

[bert-beyondloops]

Describe the bug

Any physical query plan that incorporates filtering logic alongside row limitation consistently results in an internal error being raised."

To Reproduce

set datafusion.execution.target_partitions = '1';
set datafusion.execution.batch_size = '1';
create table test (i INTEGER) as values (1), (2);
select * from test where i <> 0 limit 1;

Expected behavior

No internal error should be raised.

Additional context

No response

[bert-beyondloops]

I'll put together a PR

[xudong963]

@bert-beyondloops Thank you! The issue isn't in version 51, right?

[bert-beyondloops]

@xudong963 Introduced indeed in 52.

[alamb]

Thank you @bert-beyondloops and @xudong963 .
I have filed a ticket to start tracking a patch release for 52

• Release DataFusion 52.1.0 or 52.0.1 (minor/patch) Release (Jan 2026) #19784

[alamb]

• Fix PR: Issue 19781 : Internal error: Assertion failed: !self.finished: LimitedBatchCoalescer #19785
• Backport PR: [branch-52] Fix Internal error: Assertion failed: !self.finished: LimitedBatchCoalescer (#19785) #19836