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https://issues.apache.org/jira/browse/SPARK-33888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17253936#comment-17253936
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Duc Hoa Nguyen commented on SPARK-33888:
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I'm making a PR for this at https://github.com/apache/spark/pull/30902 . Let me
figure out the adding test part then I can submit for review.
> AVRO SchemaConverts - logicalType TimeMillis not being converted to Timestamp
> type
> ----------------------------------------------------------------------------------
>
> Key: SPARK-33888
> URL: https://issues.apache.org/jira/browse/SPARK-33888
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.4.3, 3.0.0, 3.0.1
> Reporter: Duc Hoa Nguyen
> Assignee: Apache Spark
> Priority: Minor
>
> We encountered the issue of Avro logical type of `TimeMillis` not being
> converted correctly to Spark `Timestamp` struct type using the
> `SchemaConverters`, but it converts to regular `int` instead. Reproducible by
> ingest data from MySQL table with a column of TIME type: Spark JDBC dataframe
> will get the correct type (Timestamp), but enforcing our avro schema
> (`{"type": "int"," logicalType": "time-millis"}`) externally will fail to
> apply with the following exception:
> {{java.lang.RuntimeException: java.sql.Timestamp is not a valid external type
> for schema of int}}
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