Github user jackylk commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2461#discussion_r200894373
--- Diff:
core/src/main/java/org/apache/carbondata/core/datamap/dev/DataMapFactory.java
---
@@ -110,6 +110,10 @@ public abstract DataMapBuilder createBuilder(Segment
segment, String shardName,
*/
public abstract DataMapLevel getDataMapLevel();
+ /**
+ * delete datamap of the segment
+ */
+ public abstract void deleteDatamapData(Segment segment);
/**
--- End diff --
add one extra empty line
---