apache/wayang

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Apache Wayang is the first cross-platform data processing system.

Stars: 274
Forks: 141
Open beginner issues: 4
Indexed issues: 108
Avg merge: 5d 16h
Merged PRs (30d): 4

Dominant language: Java
License: Apache-2.0
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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107 open issues indexed

Record.compareTo() throws ClassCastException when comparing records Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

apache/wayang#813 · Opened Sep 13, 2026
Update distribution archive commands in wayang-api-json Open

Difficulty 1/5 Under an hour Newbie friendliness 85/100

apache/wayang#812 · Opened Sep 12, 2026
[Docs] Fix broken markdown formatting, leaked reviewer prompt, and outdated URLs in tutorial.md Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

apache/wayang#810 · Opened Sep 12, 2026
convert to config Open

todo

Difficulty 3/5 1-2 days Newbie friendliness 45/100

apache/wayang#776 · 1 comment · Opened Jun 29, 2026
Check which SRID to use. Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/wayang#753 · Opened May 4, 2026
Missing schema/type validation between SQL and Java operators leads to runtime ClassCastException Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

apache/wayang#747 · 1 comment · Opened Apr 15, 2026
Unused parameter in function ProjectionDescriptor.createPojoJavaImplementation() Open

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

apache/wayang#732 · 3 comments · Opened Mar 24, 2026
this.size is currently always 0 Open

todo

Difficulty 3/5 1-2 days Newbie friendliness 35/100

apache/wayang#678 · Opened Feb 8, 2026
may need better support for CASTing in the future. See sqlCast() in this file. Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/wayang#676 · 2 comments · Opened Feb 6, 2026
a cleaner way to handle this Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 30/100

apache/wayang#672 · 2 comments · Opened Feb 3, 2026
Revise implementation to support multiple field projection, by names Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 32/100

apache/wayang#649 · 3 comments · Opened Dec 19, 2025
fields are never queried, why? Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/wayang#648 · 1 comment · Opened Dec 19, 2025
add functionality required for this test load_collection & collect Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 45/100

apache/wayang#633 · 1 comment · Opened Nov 17, 2025
add functionality required for this test load_collection & collect Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/wayang#631 · Opened Nov 17, 2025
fix this test by giving it proper test resources & fixing some type issues with ... Open

todo

Difficulty 3/5 1-2 days Newbie friendliness 35/100

apache/wayang#630 · 1 comment · Opened Nov 17, 2025
add functionality required for this test load_collection & collect Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/wayang#629 · Opened Nov 17, 2025
Suggested improvements to documentation Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

apache/wayang#613 · 3 comments · 2 reactions · Opened Sep 24, 2025
investigate/convert to Calcite's SchemaPlus way of reading calcite models instea... Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 45/100

apache/wayang#586 · 2 comments · Opened Jun 16, 2025
sql-api SqlToStream type issue Open

bug

apache/wayang#575 · 2 comments · 2 assignees · Opened May 21, 2025
Join in Python is very slow Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

apache/wayang#569 · 2 comments · Opened May 15, 2025
Python API should auto-infer types Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/wayang#550 · 1 comment · Opened Apr 23, 2025
Record should take advantage of RecordType (if used) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/wayang#542 · 1 comment · Opened Apr 10, 2025
log4j issues Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

apache/wayang#536 · Opened Apr 9, 2025
JSON API is not concurrent Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/wayang#535 · 1 comment · Opened Apr 9, 2025
ParquetSource should be tested Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

apache/wayang#530 · 3 comments · Opened Apr 3, 2025
what to write here Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/wayang#527 · Opened Apr 3, 2025
what to write here Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/wayang#526 · Opened Apr 3, 2025
what to write here Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 30/100

apache/wayang#525 · Opened Apr 3, 2025
Consider using Java Records Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/wayang#514 · 5 comments · Opened Mar 5, 2025
Minor edits in LICENSE/NOTICE files Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

apache/wayang#501 · 2 comments · Opened Feb 6, 2025
Update zio http to a released version Open

Difficulty 1/5 Under an hour Newbie friendliness 55/100

apache/wayang#498 · 1 comment · Opened Feb 3, 2025
Move JavaCSVTableSource operator from sql-api to the Java platform Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

apache/wayang#482 · 3 comments · Opened Nov 14, 2024
Restructure the Kafka related operators Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/wayang#469 · 2 comments · Opened Sep 5, 2024
Properly type this in the future Open

todo

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/wayang#449 · Opened May 9, 2024
check for the case where the index matter Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/wayang#448 · Opened May 9, 2024
enrich this documentation Open

todo

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

apache/wayang#447 · Opened May 9, 2024
not necesary it it 0 Open

todo

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

apache/wayang#444 · Opened May 9, 2024
this should iterate through previous REDESIGN Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 30/100

apache/wayang#443 · Opened May 9, 2024
Why managing previous and predecessors per separate? Open

todo

Difficulty 5/5 Over a week Newbie friendliness 20/100

apache/wayang#442 · Opened May 9, 2024
create reduce by Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/wayang#440 · Opened May 9, 2024
maybe would be better just leave the number as key Open

todo

Difficulty 3/5 1-2 days Newbie friendliness 25/100

apache/wayang#439 · Opened May 9, 2024
key should be given by "udf" Open

todo

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

apache/wayang#438 · Opened May 9, 2024
Add more estimator mixins Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 30/100

apache/wayang#434 · Opened Apr 25, 2024
Is this okay? Open

todo

Difficulty 5/5 Over a week Newbie friendliness 20/100

apache/wayang#433 · Opened Apr 25, 2024
Add all platforms Open

todo

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/wayang#432 · Opened Apr 25, 2024
Check hard coded output index 0 Open

todo

Difficulty 3/5 1-2 days Newbie friendliness 35/100

apache/wayang#431 · Opened Apr 25, 2024
Add all plugins Open

todo

apache/wayang#430 · 2 comments · 1 assignee · Opened Apr 25, 2024
Performance issue on TPCH comparing with sparksql Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/wayang#423 · 12 comments · Opened Mar 27, 2024
Add sample method Open

todo

Difficulty 3/5 1-2 days Newbie friendliness 35/100

apache/wayang#414 · Opened Mar 12, 2024
other parameters Open

todo

Difficulty 5/5 Over a week Newbie friendliness 20/100

apache/wayang#391 · Opened Jan 11, 2024

apache/wayang

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