[GitHub] [carbondata] ravipesala commented on a change in pull request #3178: [CARBONDATA-3348] Support alter SORT_COLUMNS property

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ravipesala commented on a change in pull request #3178: [CARBONDATA-3348] Support alter SORT_COLUMNS property
URL: https://github.com/apache/carbondata/pull/3178#discussion_r277223302
 
 

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 File path: integration/spark-common/src/main/scala/org/apache/carbondata/spark/rdd/CarbonScanRDD.scala
 ##########
 @@ -232,7 +232,7 @@ class CarbonScanRDD[T: ClassTag](
       statistic.addStatistics(QueryStatisticsConstants.BLOCK_ALLOCATION, System.currentTimeMillis)
       statisticRecorder.recordStatisticsForDriver(statistic, queryId)
       statistic = new QueryStatistic()
-      val carbonDistribution = if (directFill) {
+      val carbonDistribution = if (directFill && !tableInfo.hasColumnDrift) {
 
 Review comment:
   Can you give more details on why merge_small_files and custom distribution cannot work if it has columndrift

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