mapleFU commented on code in PR #197:
URL: https://github.com/apache/parquet-format/pull/197#discussion_r1302018886
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src/main/thrift/parquet.thrift:
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@@ -191,6 +191,64 @@ enum FieldRepetitionType {
REPEATED = 2;
}
+/**
+ * A histogram of repetition and definition levels for either a page or
column chunk.
+ *
+ * This is useful for:
+ * 1. Estimating the size of the data when materialized in memory
Review Comment:
Oh I got it, since we can deduce that the size of parent layer...Thats great
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