Marc Prud'hommeaux created SPARK-15491: ------------------------------------------
Summary: JSON serializations fails for JDBC DataFrames Key: SPARK-15491 URL: https://issues.apache.org/jira/browse/SPARK-15491 Project: Spark Issue Type: Bug Components: SQL Affects Versions: 2.0.0 Environment: MacOS 10.11.5, Spark 2.0.0-preview Reporter: Marc Prud'hommeaux The TreeNode.toJSON feature implemented in SPARK-12321 fails with an assertion error on DataFrames that use JDBC in spark 2.0.0-preview: {code} scala> sqlContext.read.json("examples/src/main/resources/people.json").select("name", "age").agg(avg("age"), count("name")).filter(avg("age") > 10).queryExecution.logical.toJSON res113: String = [{"class":"org.apache.spark.sql.catalyst.plans.logical.Filter","num-children":1,"condition":[{"class":"org.apache.spark.sql.catalyst.expressions.GreaterThan","num-children":2,"left":0,"right":1},{"class":"org.apache.spark.sql.catalyst.expressions.aggregate.AggregateExpression","num-children":1,... scala> sqlContext.read.format("jdbc").options(db + ("dbtable" -> "categories")).load().queryExecution.logical.simpleString res120: String = Relation[category#2148,categoryname#2149] JDBCRelation(categories) scala> sqlContext.read.format("jdbc").options(db + ("dbtable" -> "categories")).load().queryExecution.logical.toJSON java.lang.AssertionError: assertion failed at scala.Predef$.assert(Predef.scala:156) at org.apache.spark.sql.catalyst.trees.TreeNode.org$apache$spark$sql$catalyst$trees$TreeNode$$parseToJson(TreeNode.scala:598) at org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$jsonFields$2.apply(TreeNode.scala:562) at org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$jsonFields$2.apply(TreeNode.scala:553) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.immutable.List.foreach(List.scala:381) at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at scala.collection.immutable.List.map(List.scala:285) at org.apache.spark.sql.catalyst.trees.TreeNode.jsonFields(TreeNode.scala:553) at org.apache.spark.sql.catalyst.trees.TreeNode.org$apache$spark$sql$catalyst$trees$TreeNode$$collectJsonValue$1(TreeNode.scala:538) at org.apache.spark.sql.catalyst.trees.TreeNode.jsonValue(TreeNode.scala:543) at org.apache.spark.sql.catalyst.trees.TreeNode.toJSON(TreeNode.scala:529) ... 48 elided {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