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https://issues.apache.org/jira/browse/SPARK-34459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17286311#comment-17286311
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jiaan.geng commented on SPARK-34459:
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[~smilegator] I see. Let me do it.
> map_from_arrays() throws UnsupportedOperationException with array of
> ColumnarMap
> --------------------------------------------------------------------------------
>
> Key: SPARK-34459
> URL: https://issues.apache.org/jira/browse/SPARK-34459
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: Allison Wang
> Priority: Minor
>
> An example to reproduce this error:
> {code:scala}
> sql("select map(1, 2) as m_a, map(3, 4) as m_b").write.saveAsTable("t")
> sql("select map_from_arrays(array(1, 2), array(m_a, m_b)) from t")
> {code}
> Exception trace:
> {code:java}
> java.lang.UnsupportedOperationException
> at org.apache.spark.sql.vectorized.ColumnarMap.copy(ColumnarMap.java:51)
> at org.apache.spark.sql.vectorized.ColumnarMap.copy(ColumnarMap.java:25)
> at
> org.apache.spark.sql.catalyst.InternalRow$.copyValue(InternalRow.scala:121)
> at
> org.apache.spark.sql.catalyst.util.GenericArrayData.copy(GenericArrayData.scala:54)
> at
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage1.processNext(Unknown
> Source)
> at
> org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)
> at
> org.apache.spark.sql.execution.WholeStageCodegenExec$$anon$1.hasNext(WholeStageCodegenExec.scala:754)
> at
> org.apache.spark.sql.execution.collect.UnsafeRowBatchUtils$.encodeUnsafeRows(UnsafeRowBatchUtils.scala:80)
> at
> org.apache.spark.sql.execution.collect.Collector.$anonfun$processPartition$1(Collector.scala:179)
> at
> org.apache.spark.SparkContext.$anonfun$runJob$6(SparkContext.scala:2541)
> at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90)
> at org.apache.spark.scheduler.Task.doRunTask(Task.scala:150)
> at org.apache.spark.scheduler.Task.run(Task.scala:119)
> at
> org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$10(Executor.scala:733)
> at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1643)
> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:736)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> This is due to ColumnarMap's copy method not implemented.
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