tianz101 commented on code in PR #37326:
URL: https://github.com/apache/beam/pull/37326#discussion_r2710343613
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sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/spanner/changestreams/action/QueryChangeStreamAction.java:
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@@ -179,10 +178,9 @@ public ProcessContinuation run(
final String token = partition.getPartitionToken();
final Timestamp startTimestamp = tracker.currentRestriction().getFrom();
final Timestamp endTimestamp = partition.getEndTimestamp();
Review Comment:
Here endTs from the partition can be
1) bounded (i.e., a specific end ts specified by user) or
2) unbounded(i.e., MAX_INCLUSIVE_END_AT).
If bounded,
1.1) For change stream V1, we can use the bounded endTimestamp to query and
claim if success.
1.2) For change stream V2, we can not use the bounded endTimestamp to query
as validation may fail endTs > max(startTs, now) + 30m. So we should use now+2m
instead.
If unbounded,
2.1) and 2.2) For both change stream V1 and V2 we have to use now+2m.
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