[enchement](mc)Optimize reading of maxcompute partition tables. (#45148)#45246
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yiguolei merged 1 commit intoapache:branch-2.1from Dec 11, 2024
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…he#45148) 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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bp #45148
What problem does this PR solve?
Problem Summary:
Optimize reading of maxcompute partition tables:
num_partitions_in_batch_mode.mc.split_cross_partition. The parameter is true, which is more friendly to reading partition tables, and false, which is more friendly to debug.-Darrow.enable_null_check_for_get=falseto be jvm to improve the efficiency of mc arrow data conversion.Release note
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