[opt](catalog) merge scan range to avoid too many splits (#38311) #38964
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PR apache#34032 introduce a new method to get splits batch by batch, but it removed a logic that BE will merge scan ranges to avoid too many scan ranges being scheduled. This PR mainly changes: 1. Add scan range merging logic back. 2. Change the default file split size from 8MB to 64MB, to avoid too many small split.
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run buildall |
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| LOG(INFO) << "Merge " << scan_ranges.size() << " scan ranges to " << merged_ranges.size(); | ||
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warning: redundant access specifier has the same accessibility as the previous access specifier [readability-redundant-access-specifiers]
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Additional context
be/src/vec/exec/scan/split_source_connector.h:46: previously declared here
protected:
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run buildall |
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TeamCity be ut coverage result: |
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bp #38311