kumarpritam863 commented on issue #16282:
URL: https://github.com/apache/iceberg/issues/16282#issuecomment-5081883420
The committed offsets come from the Iceberg latest created snapshot:
` private Map<Integer, Long> lastCommittedOffsetsForTable(Table table,
String branch) {
Snapshot snapshot = latestSnapshot(table, branch);
if (snapshot == null) {
return Map.of();
}
Iterable<Snapshot> branchAncestry =
SnapshotUtil.ancestorsOf(snapshot.snapshotId(), table::snapshot);
return lastCommittedOffsets(branchAncestry);
}`
Even if the controlTopic goes backward, it will be ignored as it will be
less than what is stored in the table.
Any control topic only contributes in any of the snapshot only if it's
offset is strictly greater than what already committed in the last created
snapshot.
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