CombineFns with no inputs should produce no outputs when used as a main input
Open
bug
core
java
P3
- Dominant language
- Java
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Description
TestGloballyEmptyCollection seems to be violating this assumption
https://github.com/apache/incubator-beam/pull/862/files#diff-a305819710e8d79d2b045d6416184f21R65
Imported from Jira [BEAM-586](https://issues.apache.org/jira/browse/BEAM-586). Original Jira may contain additional context.
Reported by: tgroh.
Contributor guide
Research direction
Start by reading the TestGloballyEmptyCollection test and the referenced historical pull-request diff. Determine the expected behavior for a CombineFns transform with no inputs used as a main input, then add or update coverage so the test verifies that no outputs are produced.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- data, distributed-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100