Github user scwf commented on a diff in the pull request:
https://github.com/apache/spark/pull/4380#discussion_r24250954
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveMetastoreCatalog.scala ---
@@ -422,6 +422,40 @@ private[hive] class HiveMetastoreCatalog(hive:
HiveContext) extends Catalog with
}
}
+ object WriteToDirs extends Rule[LogicalPlan] with HiveInspectors {
+ import org.apache.hadoop.hive.ql.Context
+ import org.apache.hadoop.hive.ql.parse.{ASTNode, SemanticAnalyzer}
+
+ def apply(plan: LogicalPlan): LogicalPlan = plan transform {
+ // Wait until children are resolved.
+ case p: LogicalPlan if !p.childrenResolved => p
+
+ case WriteToDirectory(path, child, isLocal, extra: ASTNode) =>
+ // use hive analyzer to analyze row format info and file format
info
+ val sa = new SemanticAnalyzer(hive.hiveconf) {
+ override def analyzeInternal(ast: ASTNode) {
+ val ctx_1 = this.initPhase1Ctx()
+ this.doPhase1(ast, this.getQB, ctx_1)
+ this.getMetaData(this.getQB)
+ }
+ }
+ // analyze row format info
+ sa.analyze(extra, new Context(hive.hiveconf))
+ val localDesc = sa.getQB.getLLocalDirectoryDesc
+
+ // generate column name and related type info as hive style
+ val Array(cols, types) = child.output.foldLeft(Array("", ""))((r,
a) => {
+ r(0) = r(0) + a.name + ","
+ r(1) = r(1) + a.dataType.toTypeInfo.getTypeName + ":"
+ r
+ })
+
+ val tableDesc =
+ PlanUtils.getDefaultTableDesc(localDesc, cols.dropRight(1),
types.dropRight(1))
+
+ WriteToDirectory(path, child, isLocal, tableDesc)
--- End diff --
is there other method to get the tabledesc?
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