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Wang, Gang commented on MNEMONIC-260: ------------------------------------- After changed the dependent version of scala from 2.11.8 to 2.11.7 for Mnemonic, it shows [INFO] --- scala-maven-plugin:3.2.2:testCompile (default) @ mnemonic-spark-core --- [WARNING] Expected all dependencies to require Scala version: 2.11.7 [WARNING] com.twitter:chill_2.11:0.8.0 requires scala version: 2.11.7 [WARNING] org.apache.spark:spark-core_2.11:2.1.0 requires scala version: 2.11.8 [WARNING] Multiple versions of scala libraries detected! ---AND---- INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ mnemonic-spark-core --- [INFO] org.apache.mnemonic:mnemonic-spark-core:jar:0.7.0-incubating-SNAPSHOT [INFO] \- org.apache.spark:spark-core_2.11:jar:2.1.0:compile [INFO] +- com.twitter:chill_2.11:jar:0.8.0:compile [INFO] | \- (com.twitter:chill-java:jar:0.8.0:compile - omitted for duplicate) [INFO] +- com.twitter:chill-java:jar:0.8.0:compile [INFO] \- org.apache.spark:spark-unsafe_2.11:jar:2.1.0:compile [INFO] \- (com.twitter:chill_2.11:jar:0.8.0:compile - omitted for duplicate) [INFO] ------------------------------------------------------------------------ so Looks it is an issue stem from the artifact of org.apache.spark:spark-core_2.11:2.1.0 > Resolve the maven build Warning about Scala versions > ----------------------------------------------------- > > Key: MNEMONIC-260 > URL: https://issues.apache.org/jira/browse/MNEMONIC-260 > Project: Mnemonic > Issue Type: Improvement > Components: Tools > Affects Versions: 0.8.0-incubating > Reporter: Wang, Gang > Assignee: Wang, Gang > Priority: Minor > Fix For: 0.8.0-incubating > > > [INFO] --- scala-maven-plugin:3.2.2:compile (default) @ mnemonic-spark-core > --- > [WARNING] Expected all dependencies to require Scala version: 2.11.8 > [WARNING] com.twitter:chill_2.11:0.8.0 requires scala version: 2.11.7 > [WARNING] Multiple versions of scala libraries detected! -- This message was sent by Atlassian JIRA (v6.3.15#6346)