branch-4.1: [fix](fe) Guard auto partition result against concurrent drops #65282#65956
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Problem Summary: Auto partition creation can race with dynamic partition retention. After new partitions are added, the response builder reads the table partition map and partition info without holding the table metadata lock. If a retention drop removes one of those partitions in the same window, the response builder can observe a missing partition or partition item and hit a null pointer while constructing partition and tablet metadata. This change snapshots the required partition metadata under the table read lock, returns a normal error when the partition was already dropped before the snapshot, and keeps tablet location/cache/backend resolution work outside the table lock.
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Thank you for your contribution to Apache Doris. Please clearly describe your PR:
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FE UT Coverage ReportIncrement line coverage |
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FE Regression Coverage ReportIncrement line coverage |
yiguolei
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Jul 24, 2026
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PR approved by at least one committer and no changes requested. |
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Cherry-picked from #65282