Jimmy Lu created ARROW-10840:
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Summary: FileMetaData does not have key_value_metadata when built
from FileMetaDataBuilder
Key: ARROW-10840
URL: https://issues.apache.org/jira/browse/ARROW-10840
Project: Apache Arrow
Issue Type: Bug
Affects Versions: 2.0.0, 1.0.1, 1.0.0
Reporter: Jimmy Lu
{{FileMetaDataImpl::key_value_metadata_}} is initialized in the constructor:
https://github.com/apache/arrow/blob/apache-arrow-1.0.0/cpp/src/parquet/metadata.cc#L530
But in {{RowGroupMetaDataBuilder::Finish}}, {{FileMetaDataImpl::metadata_}} is
set after the construction and we are missing the
{{FileMetaDataImpl::InitKeyValueMetadata}} call here:
https://github.com/apache/arrow/blob/apache-arrow-1.0.0/cpp/src/parquet/metadata.cc#L1412
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