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ARROW-92: Arrow to Parquet Schema conversion - #68
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xhochy wants to merge 6 commits into
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wesm
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Apr 24, 2016
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We'll have to make some decisions about type mappings. For example:
For List types, we should use the 3-level array encoding as described here https://github.com/apache/parquet-cpp/blob/master/src/parquet/schema/types.h#L49 What other parts do you think are underspecified? |
xhochy
commented
Apr 25, 2016
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For |
wesm
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Apr 25, 2016
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I see. For decimals, I agree we either need multiple Arrow types, or add metadata indicating the physical storage type to the DecimalType. I would say it's better to make this explicit in the Arrow data type, let me know what you think |
xhochy
commented
May 1, 2016
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Probably a simple |
xhochy
commented
May 1, 2016
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PR is now in state for a minimal schema conversion basis for Pandas<->Parquet. |
| break; | ||
| case Type::CHAR: | ||
| type = ParquetType::FIXED_LEN_BYTE_ARRAY; | ||
| logical_type = LogicalType::UTF8; |
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Aside: we'll need to visit the string encoding question, as logical unicode characters won't map neatly onto a char(n) type
wesm
commented
May 1, 2016
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This looks good outside the exception handling question |
wesm
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May 1, 2016
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+1, thank you |
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Aug 30, 2018
* Fix missing set the include directory of gtest * Fix to use same format as other dependencies
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Aug 30, 2018
* Fix missing set the include directory of gtest * Fix to use same format as other dependencies
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* Fix missing set the include directory of gtest * Fix to use same format as other dependencies
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Aug 30, 2018
* Fix missing set the include directory of gtest * Fix to use same format as other dependencies
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Sep 4, 2018
* Fix missing set the include directory of gtest * Fix to use same format as other dependencies
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Sep 8, 2018
Author: Aliaksei Sandryhaila <aliaksei.sandryhaila@hp.com> Closesapache#68 from asandryh/PARQUET-537 and squashes the following commits: 18dca87 [Aliaksei Sandryhaila] Added a unit test. dfb7a0b [Aliaksei Sandryhaila] PARQUET-537: Ensure that LocalFileSource is properly closed. Change-Id: I9f2544a51e350464983f7ca511970b434d009f3a
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Sep 10, 2018
* Fix missing set the include directory of gtest * Fix to use same format as other dependencies
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Sep 10, 2018
* Fix missing set the include directory of gtest * Fix to use same format as other dependencies
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Aug 4, 2020
* Offset buffer can be pre-grown in Parquet ByteArray reader * nit
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Jan 6, 2022
* Initial commit * Introduce TranslateHolder * Remove unused header
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* Initial commit * Introduce TranslateHolder * Remove unused header
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Jan 9, 2022
* Add translate expression support (apache#68) * Initial commit * Introduce TranslateHolder * Remove unused header * Return 1 if empty string is given as substring (apache#69) * Add two math operations: floor & ceil (apache#72) * Inital commit * Add ceil function Co-authored-by: PHILO-HE <feilong.he@intel.com>
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* Initial commit * Introduce TranslateHolder * Remove unused header
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* Initial commit * Introduce TranslateHolder * Remove unused header
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* Initial commit * Introduce TranslateHolder * Remove unused header
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My current WIP state. To make the actual schema conversion complete, we probably need the physical structure too as Arrow schemas only care about logical types whereas Parquet schema is about logical and physical types.