agnes-xinyi-lu commented on code in PR #15126:
URL: https://github.com/apache/iceberg/pull/15126#discussion_r2786180156
##########
core/src/test/java/org/apache/iceberg/rest/TestRESTCatalog.java:
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@@ -3606,6 +3614,119 @@ protected RESTSessionCatalog newSessionCatalog(
return catalog;
}
+ /**
+ * Test concurrent appends on multiple branches simultaneously to verify
proper handling of
+ * sequence number conflicts.
+ *
+ * <p>Uses a barrier to synchronize threads so they all load the same table
state and commit
+ * simultaneously, creating deterministic conflicts. With retries disabled,
we can verify exact
+ * counts: one success per round, and (numBranches - 1)
CommitFailedExceptions per round.
Review Comment:
I updated the test with what you pasted. Thanks @amogh-jahagirdar !
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