gh-yzou commented on code in PR #496:
URL: https://github.com/apache/parquet-format/pull/496#discussion_r2165227668
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src/main/thrift/parquet.thrift:
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@@ -461,6 +461,29 @@ struct GeographyType {
2: optional EdgeInterpolationAlgorithm algorithm;
}
+/**
+ * Year-Month Interval logical type annotation
+ *
+ * The data is stored as an 4 byte signed integer which represents the number
+ * of months associated with the time interval. The value can be negative to
+ * indicate a backward duration.
Review Comment:
The 16 is chosen because we want to cover representation capabilities across
various engines, where Oracle support a max range of +/- 999,999,999 days,
which requires at lease 10 bytes. we choose 16 bytes are mainly for alignment
and compatibility
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