emkornfield commented on a change in pull request #7887:
URL: https://github.com/apache/arrow/pull/7887#discussion_r486759286
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File path: cpp/src/arrow/array/builder_base.h
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@@ -98,6 +98,9 @@ class ARROW_EXPORT ArrayBuilder {
virtual Status AppendNull() = 0;
virtual Status AppendNulls(int64_t length) = 0;
+ virtual Status AppendEmptyValue() = 0;
Review comment:
Yes, the change meets the spec but potentially breaks parquet writing
for use-cases going through th builder per
https://issues.apache.org/jira/browse/ARROW-9603?filter=-2 (which relies on the
behavior of forcing nulls). I would prefer not to change this behavior before
fixing the referenced bug.
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