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https://issues.apache.org/jira/browse/PARQUET-1160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16580316#comment-16580316
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Ted Haining commented on PARQUET-1160:
--------------------------------------
The Data Integration software from HVR ([https://www.hvr-software.com/)]
produces Parquet files that have BYTE_ARRAY-backed decimals. A small sample
data file with random data produced by HVR is attached.
[^20180726193815980.parquet]
> [C++] Implement BYTE_ARRAY-backed Decimal reads
> -----------------------------------------------
>
> Key: PARQUET-1160
> URL: https://issues.apache.org/jira/browse/PARQUET-1160
> Project: Parquet
> Issue Type: Task
> Components: parquet-cpp
> Affects Versions: cpp-1.3.0
> Reporter: Phillip Cloud
> Assignee: Phillip Cloud
> Priority: Major
> Attachments: 20180726193815980.parquet
>
>
> These are valid in the parquet spec, but it seems like no system in use today
> implements a writer for this type.
> What systems support writing Decimals with this underlying type?
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