compaction on table having range column after altering data type from string to long string fails.

When dataType of a String column which is also provided as range column in table properties is altered to longStringColumn. It shows following error while performing compaction on the table.

VARCHAR not supported for the filter expression; at org.apache.spark.sql.util.CarbonException$.analysisException (CarbonException.scala: 23) at org.apache.carbondata.spark.rdd.CarbonMergerRDD $$ anon $ 1. <init> (CarbonMergerRDD.scala: 227) at org.apache.carbondata.spark.rdd.CarbonMergerRDD.internalCompute ( CarbonMergerRDD.scala: 104) at org.apache.carbondata.spark.rdd.CarbonRDD.compute