branch-4.1: [opt](mtmv) Optimize mv rewrite performance when mv has many partition by reduce partition mapping num (#59972) - #66759
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…on by reduce partition mapping num (apache#59972) Summary - Make MTMV partition descriptor generation honor queryUsedPartitions, so only partitions referenced by the current query are carried through the pipeline instead of all partitions. - Applied the filter in MTMVRelatedPartitionDescOnePartitionColGenerator, preserving ordering of existing generators. - Added unit tests for RANGE and LIST sources to assert the filter reduces descriptors to the specified partitions. Example If a query only touches t1 partition p20210201, generateRelatedPartitionDescs now emits a single descriptor for p20210201 instead of all t1 partitions;
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pr: #59972
commitId: d398230