[feature](multi-catalog) support map&struct type in parquet&orc reader #17087
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clang-tidy review says "All clean, LGTM! 👍" |
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clang-tidy review says "All clean, LGTM! 👍" |
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run buildall |
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clang-tidy review says "All clean, LGTM! 👍" |
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TeamCity pipeline, clickbench performance test result: |
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run buildall |
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clang-tidy review says "All clean, LGTM! 👍" |
Yulei-Yang
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Mar 5, 2023
apache#17087) Support parsing map&struct type in parquet&orc reader. ## Remaining Problems 1. Doris use array type to build the key and value column of a `map`, but doesn't fill the offsets in value column, so the offsets in value column is wasted. 2. Parquet support reading only key or value column in `map`, this PR hasn't supported yet. 3. Parquet support reading partial columns in `struct`, this PR hasn't supported yet.
yagagagaga
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Mar 9, 2023
apache#17087) Support parsing map&struct type in parquet&orc reader. ## Remaining Problems 1. Doris use array type to build the key and value column of a `map`, but doesn't fill the offsets in value column, so the offsets in value column is wasted. 2. Parquet support reading only key or value column in `map`, this PR hasn't supported yet. 3. Parquet support reading partial columns in `struct`, this PR hasn't supported yet.
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Proposed changes
Support parsing map&struct type in parquet&orc reader.
Remaining Problems
map, but doesn't fill the offsets in value column, so the offsets in value column is wasted.map, this PR hasn't supported yet.struct, this PR hasn't supported yet.Fix bugs of nested array
Wrong number of ancestor nulls. Change the number of ancestor nulls from
ancestor_nulls++toancestor_nulls += loop_readChecklist(Required)
Further comments
If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...