Caizhi Weng created FLINK-29842:
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Summary: Change commitIdentifier in Table Store snapshot to long
value
Key: FLINK-29842
URL: https://issues.apache.org/jira/browse/FLINK-29842
Project: Flink
Issue Type: Improvement
Components: Table Store
Affects Versions: table-store-0.3.0, table-store-0.2.2
Reporter: Caizhi Weng
Assignee: Caizhi Weng
Fix For: table-store-0.3.0, table-store-0.2.2
Currently {{commitIdentifier}} in {{Snapshot}} is a {{String}} value. However
there are many scenarios where we need to compare two identifiers to find out
which one is newer. For example
* In FLINK-29840, we need to store the latest modified commit for each writer.
Only when the latest snapshot is newer than this commit can we safely close the
writer.
* In FLINK-29805, we can read the commit identifier of the latest snapshot. All
identifiers older than that should be filtered out.
* In FLINK-29752, we need to trigger full compaction once in a few commits. We
can read the latest commit identifier and compare it with the full compaction
identifier to check if full compaction is successfully committed.
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