Alex Rhee created HUDI-9376:
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Summary: Allow for archived instants pre Hudi 0.8 to be readable
by latest ArchivedTimeline api
Key: HUDI-9376
URL: https://issues.apache.org/jira/browse/HUDI-9376
Project: Apache Hudi
Issue Type: Bug
Reporter: Alex Rhee
Fix For: 1.1.0
There is some backwards compatibility issues with reading archived timeline
instants pre 0.8.
- 1st issue is that Avro was upgraded in 0.12 to a version which does not allow
for default Union to be null. This breaks reading these old instants in
HoodieDataBlock.
- 2nd issue is that it is possible for archived instants to have same timestamp
for different actions, especially given that older versions used seconds for
instant rather than milliseconds. However the archived timeline does not assume
this and assumes each instant has unique timestamp.
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