Michael Armbrust created SPARK-18891: ----------------------------------------
Summary: Support for specific collection types Key: SPARK-18891 URL: https://issues.apache.org/jira/browse/SPARK-18891 Project: Spark Issue Type: Improvement Components: SQL Affects Versions: 1.6.3, 2.1.0 Reporter: Michael Armbrust Priority: Critical Encoders treat all collections the same (i.e. {{Seq}} vs {{List}}) which force users to only define classes with the most generic type. An [example error|https://databricks-prod-cloudfront.cloud.databricks.com/public/4027ec902e239c93eaaa8714f173bcfc/1023043053387187/2398463439880241/2840265927289860/latest.html]: {code} case class SpecificCollection(aList: List[Int]) Seq(SpecificCollection(1 :: Nil)).toDS().collect() {code} {code} java.lang.RuntimeException: Error while decoding: java.util.concurrent.ExecutionException: java.lang.Exception: failed to compile: org.codehaus.commons.compiler.CompileException: File 'generated.java', Line 98, Column 120: No applicable constructor/method found for actual parameters "scala.collection.Seq"; candidates are: "line29e7e4b1e36445baa3505b2e102aa86b29.$read$$iw$$iw$$iw$$iw$SpecificCollection(scala.collection.immutable.List)" {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org