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https://issues.apache.org/jira/browse/SPARK-32756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean R. Owen updated SPARK-32756:
---------------------------------
Priority: Minor (was: Major)
> Fix CaseInsensitiveMap in Scala 2.13
> ------------------------------------
>
> Key: SPARK-32756
> URL: https://issues.apache.org/jira/browse/SPARK-32756
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Karol Chmist
> Priority: Minor
>
>
> "Spark SQL" module doesn't compile in Scala 2.13:
> {code:java}
> [info] Compiling 26 Scala sources to
> /home/karol/workspace/open-source/spark/sql/core/target/scala-2.13/classes...
> [error]
> /home/karol/workspace/open-source/spark/sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala:121:
> value += is not a member of
> org.apache.spark.sql.catalyst.util.CaseInsensitiveMap[String]
> [error] Expression does not convert to assignment because:
> [error] type mismatch;
> [error] found : scala.collection.immutable.Map[String,String]
> [error] required:
> org.apache.spark.sql.catalyst.util.CaseInsensitiveMap[String]
> [error] expansion: this.extraOptions =
> this.extraOptions.+(key.$minus$greater(value))
> [error] this.extraOptions += (key -> value)
> [error] ^
> [error]
> /home/karol/workspace/open-source/spark/sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala:132:
> value += is not a member of
> org.apache.spark.sql.catalyst.util.CaseInsensitiveMap[String]
> [error] Expression does not convert to assignment because:
> [error] type mismatch;
> [error] found : scala.collection.immutable.Map[String,String]
> [error] required:
> org.apache.spark.sql.catalyst.util.CaseInsensitiveMap[String]
> [error] expansion: this.extraOptions =
> this.extraOptions.+(key.$minus$greater(value))
> [error] this.extraOptions += (key -> value)
> [error] ^
> [error]
> /home/karol/workspace/open-source/spark/sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala:294:
> value += is not a member of
> org.apache.spark.sql.catalyst.util.CaseInsensitiveMap[String]
> [error] Expression does not convert to assignment because:
> [error] type mismatch;
> [error] found : scala.collection.immutable.Map[String,String]
> [error] required:
> org.apache.spark.sql.catalyst.util.CaseInsensitiveMap[String]
> [error] expansion: this.extraOptions =
> this.extraOptions.+("path".$minus$greater(path))
> [error] Error occurred in an application involving default arguments.
> [error] this.extraOptions += ("path" -> path)
> [error] ^
> [error]
> /home/karol/workspace/open-source/spark/sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala:317:
> type mismatch;
> [error] found : Iterable[(String, String)]
> [error] required: java.util.Map[String,String]
> [error] Error occurred in an application involving default arguments.
> [error] val dsOptions = new CaseInsensitiveStringMap(options.asJava)
> [error] ^
> [info] Iterable[(String, String)] <: java.util.Map[String,String]?
> [info] false
> [error]
> /home/karol/workspace/open-source/spark/sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala:412:
> value += is not a member of
> org.apache.spark.sql.catalyst.util.CaseInsensitiveMap[String]
> [error] Expression does not convert to assignment because:
> [error] type mismatch;
> [error] found : scala.collection.immutable.Map[String,String]
> [error] required:
> org.apache.spark.sql.catalyst.util.CaseInsensitiveMap[String]
> [error] expansion: DataFrameWriter.this.extraOptions =
> DataFrameWriter.this.extraOptions.+(DataSourceUtils.PARTITIONING_COLUMNS_KEY.$minus$greater(DataSourceUtils.encodePartitioningColumns(columns)))
> [error] extraOptions += (DataSourceUtils.PARTITIONING_COLUMNS_KEY ->
> [error] ^
> [error]
> /home/karol/workspace/open-source/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/orc/OrcFiltersBase.scala:85:
> type mismatch;
> [error] found :
> scala.collection.MapView[String,OrcFiltersBase.this.OrcPrimitiveField]
> [error] required: Map[String,OrcFiltersBase.this.OrcPrimitiveField]
> [error] CaseInsensitiveMap(dedupPrimitiveFields)
> [error] ^
> [info] scala.collection.MapView[String,OrcFiltersBase.this.OrcPrimitiveField]
> <: Map[String,OrcFiltersBase.this.OrcPrimitiveField]?
> [info] false
> [error]
> /home/karol/workspace/open-source/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/FileDataSourceV2.scala:64:
> type mismatch;
> [error] found : Iterable[(String, String)]
> [error] required: java.util.Map[String,String]
> [error] new CaseInsensitiveStringMap(withoutPath.asJava)
> [error] ^
> [info] Iterable[(String, String)] <: java.util.Map[String,String]?
> [error] 7 errors found{code}
>
> The + function in CaseInsensitiveStringMap missing, resulting in {{+}} from
> standard Map being used, which returns Map instead of
> CaseInsensitiveStringMap.
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