walterddr commented on a change in pull request #7839:
URL: https://github.com/apache/pinot/pull/7839#discussion_r765408223
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File path:
pinot-core/src/main/java/org/apache/pinot/core/common/datatable/DataTableUtils.java
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@@ -107,6 +108,34 @@ public static DataTable buildEmptyDataTable(QueryContext
queryContext)
}
}
+ public static DataTable buildMetadataOnlyDataTable(DataTable origDataTable) {
Review comment:
doing this without replicating is dangerous unless we make the resulting
`MetadataOnlyDataTable` and `DataOnlyDataTable` somehow immutable
e.g. you have additional object reference outside of the original DataTable
that can mutate the content of itself. This can lead to unexpected behaviors
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