Roman Khachatryan created FLINK-23035:
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Summary: Add explicit method to StateChangelogWriter to write
metadata
Key: FLINK-23035
URL: https://issues.apache.org/jira/browse/FLINK-23035
Project: Flink
Issue Type: Sub-task
Components: Runtime / State Backends
Reporter: Roman Khachatryan
Fix For: 1.14.0
Currently, metadata is written to the state changelog using the same
StateChangelogWriter.append() method as data.
However, it doesn't belong to a specific group, and should be read first on
recovery. Because of that, -1 is used.
An explicit append() without keygroup would be less fragile (probably still
using -1 under the hood).
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