[native] Implement bucket conversion for Hive splits#23028
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xiaoxmeng merged 2 commits intoprestodb:masterfrom Jun 19, 2024
Merged
[native] Implement bucket conversion for Hive splits#23028xiaoxmeng merged 2 commits intoprestodb:masterfrom
xiaoxmeng merged 2 commits intoprestodb:masterfrom
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presto-native-execution/presto_cpp/main/types/PrestoToVeloxConnector.cpp
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Thanks @Yuhta. Overall looks very good minus some documentation comments.
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@Yuhta : We should have a Release note for this PR I feel. Please can you add details in the PR description. |
xiaoxmeng
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presto-native-execution/presto_cpp/main/types/PrestoToVeloxConnector.cpp
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presto-native-execution/presto_cpp/main/types/tests/PrestoToVeloxSplitTest.cpp
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When the bucket count of a table changes over time, there can be legitimate cases that multiple buckets exist in the same file. In such cases the query planner should set bucket conversion for these splits and in Velox we use extra filter to get only the rows corresponding to the bucket number requested.
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When the bucket count of a table changes over time, there can be legitimate cases that multiple buckets exist in the same file. In such cases the query planner should set bucket conversion for these splits and in Velox we use extra filter to get only the rows corresponding to the bucket number requested.