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https://issues.apache.org/jira/browse/SPARK-31861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17126568#comment-17126568
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Apache Spark commented on SPARK-31861:
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User 'juliuszsompolski' has created a pull request for this issue:
https://github.com/apache/spark/pull/28735
> Thriftserver collecting timestamp not using spark.sql.session.timeZone
> ----------------------------------------------------------------------
>
> Key: SPARK-31861
> URL: https://issues.apache.org/jira/browse/SPARK-31861
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Juliusz Sompolski
> Assignee: Juliusz Sompolski
> Priority: Major
> Fix For: 3.0.0
>
>
> If JDBC client is in TimeZone PST, and sets spark.sql.session.timeZone to
> PST, and sends a query "SELECT timestamp '2020-05-20 12:00:00'", and the JVM
> timezone of the Spark cluster is e.g. CET, then
> - the timestamp literal in the query is interpreted as 12:00:00 PST, i.e.
> 21:00:00 CET
> - but currently when it's returned, the timestamps are collected from the
> query with a collect() in
> https://github.com/apache/spark/blob/master/sql/hive-thriftserver/src/main/scala/org/apache/spark/sql/hive/thriftserver/SparkExecuteStatementOperation.scala#L299,
> and then in the end Timestamps are turned into strings using a t.toString()
> in
> https://github.com/apache/spark/blob/master/sql/hive-thriftserver/v2.3/src/main/java/org/apache/hive/service/cli/ColumnValue.java#L138
> This will use the Spark cluster TimeZone. That results in "21:00:00"
> returned to the JDBC application.
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