HuaHuaY commented on code in PR #50892:
URL: https://github.com/apache/arrow/pull/50892#discussion_r3920731049
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cpp/src/parquet/parquet.thrift:
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@@ -637,6 +649,14 @@ enum Encoding {
Support for INT32, INT64 and FIXED_LEN_BYTE_ARRAY added in 2.11.
*/
BYTE_STREAM_SPLIT = 9;
+
+ /** Adaptive Lossless floating-Point (ALP) encoding for FLOAT and DOUBLE.
+ Losslessly converts decimal-like floating-point values to integers via
+ decimal scaling, then applies Frame of Reference (FOR) encoding and
+ bit-packing; values that cannot be converted losslessly are stored as
Review Comment:
No. Since the Parquet version containing the FILE type has not yet been
released, this PR currently incorporates the contents of two separate PRs.
1. update parquet.thrift and the generated code
2. implement the Parquet FILE logical type
Code related to ALP is included in the first part. I will split this PR into
two after the new Parquet release is published.
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