[SPARK-22661] Fix the putAll compile error when compiling with scala-2.12 and jdk9

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.2.0
• Component/s: Build
• Assignee: Unassigned
• Reporter: liyunzhang
• Created: 30/Nov/17 08:06
• Updated: 30/Nov/17 08:22
• Resolved: 30/Nov/17 08:22

Description

Based on SPARK-22660 and get the following error

error] /home/zly/prj/oss/jdk9_HOS_SOURCE/spark_source/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/ScriptTransformationExec.scala:415: ambiguous reference to overloaded definition, [error] both method putAll in class Properties of type (x$1: java.util.Map[_, _])Unit [error] and  method putAll in class Hashtable of type (x$1: java.util.Map[_ <: Object, _ <: Object])Unit [error] match argument types (java.util.Map[String,String])
[error]     properties.putAll(propsMap.asJava)
[error]                ^
[error] /home/zly/prj/oss/jdk9_HOS_SOURCE/spark_source/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/ScriptTransformationExec.scala:427: ambiguous reference to overloaded definition, [error] both method putAll in class Properties of type (x$1: java.util.Map[_, _])Unit [error] and  method putAll in class Hashtable of type (x$1: java.util.Map[_ <: Object, _ <: Object])Unit [error] match argument types (java.util.Map[String,String])
[error]       props.putAll(outputSerdeProps.toMap.asJava)
[error]             ^

The key type is Object instead of String, which is unsafe.

Issue Links

• duplicates: SPARK-22660 Use position() and limit() to fix ambiguity issue in scala-2.12