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https://issues.apache.org/jira/browse/HIVE-13251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15188242#comment-15188242
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Aihua Xu commented on HIVE-13251:
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[~xuefuz] I'm wondering why we try to get schema info from the file rather than
from the record in HIVE-5823 for decimal?
> hive can't read the decimal in AVRO file generated from previous version
> ------------------------------------------------------------------------
>
> Key: HIVE-13251
> URL: https://issues.apache.org/jira/browse/HIVE-13251
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 2.1.0
> Reporter: Aihua Xu
> Assignee: Aihua Xu
>
> HIVE-7174 makes the avro schema change to match avro definition, while it
> breaks the compatibility if the file is generated from the previous Hive. We
> should allow to read old file format "precision" : "4", "scale": "8", but
> write in the new format.
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