Github user kumarvishal09 commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/3045#discussion_r245273039
--- Diff:
integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/preaaggregate/PreAggregateTableHelper.scala
---
@@ -110,22 +109,42 @@ case class PreAggregateTableHelper(
// Datamap table name and columns are automatically added prefix with
parent table name
// in carbon. For convenient, users can type column names same as the
ones in select statement
// when config dmproperties, and here we update column names with
prefix.
- val longStringColumn =
tableProperties.get(CarbonCommonConstants.LONG_STRING_COLUMNS)
+ // If longStringColumn is not present in dmproperties then we take
long_string_columns from
+ // the parent table.
+ var longStringColumn =
tableProperties.get(CarbonCommonConstants.LONG_STRING_COLUMNS)
+ val longStringColumnInParents =
parentTable.getTableInfo.getFactTable.getTableProperties.asScala
+ .getOrElse(CarbonCommonConstants.LONG_STRING_COLUMNS,
"").split(",").map(_.trim)
+ var varcharDatamapFields = ""
+ fieldRelationMap foreach (fields => {
+ val aggFunc = fields._2.aggregateFunction
+ if (aggFunc == "") {
+ val relationList = (fields._2.columnTableRelationList)
+ relationList.foreach(rel => {
+ rel.foreach(col => {
+ if (longStringColumnInParents.contains(col.parentColumnName)) {
+ varcharDatamapFields += col.parentColumnName + ","
+ }
+ })
+ })
+ }
+ })
+ if (varcharDatamapFields.size != 0) {
+ longStringColumn = Option(varcharDatamapFields.slice(0,
varcharDatamapFields.length - 1))
+ }
if (longStringColumn != None) {
val fieldNames = fields.map(_.column)
- val newLongStringColumn =
longStringColumn.get.split(",").map(_.trim).map{ colName =>
+ val newLongStringColumn =
longStringColumn.get.split(",").map(_.trim).map { colName =>
val newColName = parentTable.getTableName.toLowerCase() + "_" +
colName
if (!fieldNames.contains(newColName)) {
throw new MalformedDataMapCommandException(
CarbonCommonConstants.LONG_STRING_COLUMNS.toUpperCase() + ":"
+ colName
- + " does not in datamap")
+ + " does not in datamap")
--- End diff --
revery this change
---
