aokolnychyi commented on code in PR #9050:
URL: https://github.com/apache/iceberg/pull/9050#discussion_r1393529465
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spark/v3.4/spark/src/main/java/org/apache/iceberg/spark/source/SparkWrite.java:
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@@ -390,7 +390,7 @@ private Expression conflictDetectionFilter() {
filter = Expressions.and(filter, expr);
}
- return filter;
+ return SERIALIZABLE == isolationLevel ? Expressions.alwaysTrue() :
filter;
Review Comment:
The validation on the Iceberg side works correctly. The open question is
whether the optimizer rule is safe to apply under these conditions and whether
our Spark planning rule behaves correctly. I'll need to check with fresh eyes
tomorrow.
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