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https://issues.apache.org/jira/browse/PARQUET-2261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17757607#comment-17757607
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ASF GitHub Bot commented on PARQUET-2261:
-----------------------------------------
mapleFU commented on code in PR #197:
URL: https://github.com/apache/parquet-format/pull/197#discussion_r1302018886
##########
src/main/thrift/parquet.thrift:
##########
@@ -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
> [Format] Add statistics that reflect decoded size to metadata
> -------------------------------------------------------------
>
> Key: PARQUET-2261
> URL: https://issues.apache.org/jira/browse/PARQUET-2261
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-format
> Reporter: Micah Kornfield
> Assignee: Micah Kornfield
> Priority: Major
>
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