[iceberg] Omit unknown bounds in Iceberg manifest partition summary - #9152
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JingsongLi merged 1 commit intoAug 12, 2026
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When every entry of a manifest has a null partition value, the collected partition statistics have no min/max, and IcebergManifestEntryWriter.result() passed those nulls straight to IcebergConversions.toByteBuffer(), failing the whole commit with a NullPointerException. Omit the bound instead, as the Iceberg spec declares lower_bound (510) and upper_bound (511) optional. Guard the reading side too, so a later non add-only commit does not hit the same null in IcebergConversions.toPaimonObject(). Generated-by: Claude Code
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Purpose
fix #9151
IcebergManifestEntryWriter.result()passed the unknown (null) partition min/max straight toIcebergConversions.toByteBuffer().lower_bound(510) /upper_bound(511) optional, andIcebergPartitionSummary.schema()already declares both nullable.toPaimonObject().IcebergDataFileMeta.create()has omitted unknown bounds since [core] Add field statistics in IcebergDataFileMeta #4090; this path never got the equivalent guard.Tests
IcebergCompatibilityTest#testNullPartitionValue: commitspt='a', a NULL-only batch,pt='b', thentruncatePartitions(pt='a'); asserts the omitted bounds and reads every row viaIcebergGenerics.toByteBuffer:83without the writer guard,toPaimonObject:167without the reader guard.mvn -pl paimon-core -Dtest='Iceberg*Test' test— 159 tests passed (41 inIcebergCompatibilityTest), checkstyle and spotless clean.