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https://issues.apache.org/jira/browse/ARROW-10840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kouhei Sutou updated ARROW-10840:
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Component/s: C++
> [C++] 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
> Components: C++
> Affects Versions: 1.0.0, 1.0.1, 2.0.0
> Reporter: Jimmy Lu
> Priority: Major
>
> {{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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