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https://issues.apache.org/jira/browse/IMPALA-8335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Herman Chen updated IMPALA-8335:
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Summary: Avro support requires field names to be all lowercase (was: Avro
support requires all lowercase fields)
> Avro support requires field names to be all lowercase
> -----------------------------------------------------
>
> Key: IMPALA-8335
> URL: https://issues.apache.org/jira/browse/IMPALA-8335
> Project: IMPALA
> Issue Type: Question
> Components: Catalog, Docs
> Reporter: Herman Chen
> Priority: Major
>
> I am using external tables where the data resides in S3 in avro format. My
> avdl contains fields such as:
> string id;
> string sql;
> string templateId;
> union \{ null, string } pool;
> union \{ null, string } user;
> string startTime;
> string endTime;
> However, Impala is able to read the all-lowerfields like "id" and "sql", but
> for any field containing uppercase like "templateId" or "startTime", Impala
> shows them all as NULL. I believe this is due to how Impala treats all
> identifier as lowercase, including column name. Is it so? Is there any way to
> work around it? If not it poses a major roadblock for working with
> pre-existing avro data.
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