Allison Wang created SPARK-34459:
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Summary: 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
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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