zzcclp commented on a change in pull request #3398: [CARBONDATA-3501] Fix update table with varchar column
URL:
https://github.com/apache/carbondata/pull/3398#discussion_r328480711
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File path: integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonIUDRule.scala
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@@ -37,21 +39,30 @@ class CarbonIUDRule extends Rule[LogicalPlan] with PredicateHelper {
var isTransformed = false
val newPlan = updatePlan transform {
case Project(pList, child) if !isTransformed =>
- val (dest: Seq[NamedExpression], source: Seq[NamedExpression]) = pList
+ var (dest: Seq[NamedExpression], source: Seq[NamedExpression]) = pList
.splitAt(pList.size - cols.size)
- val diff = cols.diff(dest.map(_.name.toLowerCase))
+ // check complex column
cols.foreach { col =>
val complexExists = "\"name\":\"" + col + "\""
if (dest.exists(m => m.dataType.json.contains(complexExists))) {
throw new UnsupportedOperationException(
"Unsupported operation on Complex data type")
}
}
+ // check updated columns exists in table
+ val diff = cols.diff(dest.map(_.name.toLowerCase))
if (diff.nonEmpty) {
sys.error(s"Unknown column(s) ${ diff.mkString(",") } in table ${ table.tableName }")
}
+ // modify plan for updated column *in place*
isTransformed = true
- Project(dest.filter(a => !cols.contains(a.name.toLowerCase)) ++ source, child)
+ source.foreach{ col =>
Review comment:
add a blank before '{'
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