Schemas across pipeline modifications
Open
gcp
io
java
P3
sub-task
- Dominant language
- Java
- Stars
- 8.7k
- Forks
- 4.7k
- Avg merge
- 1d 20h
- Merged PRs (30d)
- 196
Description
As per the snapshot/update proposal, we want to be able to update pipelines without damaging the in-flight state. Since schema fields might get reordered on update, we must ensure that the old mappings are preserved. This will require us to have two ids - the logical ids the user interfaces with (which might change), and the physical index where we store the schema.
Imported from Jira [BEAM-4459](https://issues.apache.org/jira/browse/BEAM-4459). Original Jira may contain additional context.
Reported by: reuvenlax.
Subtask of issue #18898
Contributor guide
Assessment
This issue has not been assessed yet.