branch-3.0: [enchement](mc)Optimize reading of maxcompute partition tables. #45148#45168
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morningman merged 1 commit intobranch-3.0from Dec 10, 2024
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branch-3.0: [enchement](mc)Optimize reading of maxcompute partition tables. #45148#45168morningman merged 1 commit intobranch-3.0from
morningman merged 1 commit intobranch-3.0from
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### What problem does this PR solve? Problem Summary: Optimize reading of maxcompute partition tables: 1. Introduce batch mode to generate splits for Maxcompute partition tables to optimize scenarios with a large number of partitions. Control it through the variable `num_partitions_in_batch_mode`. 2. Introduce catalog parameter `mc.split_cross_partition`. The parameter is true, which is more friendly to reading partition tables, and false, which is more friendly to debug. 3. Add `-Darrow.enable_null_check_for_get=false` to be jvm to improve the efficiency of mc arrow data conversion.
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Cherry-picked from #45148