[GitHub] [carbondata] Indhumathi27 commented on a change in pull request #3179: [CARBONDATA-3338] Support Incremental DataLoad for MV Datamap[with single parent table]

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Indhumathi27 commented on a change in pull request #3179: [CARBONDATA-3338] Support Incremental DataLoad for MV Datamap[with single parent table]
URL: https://github.com/apache/carbondata/pull/3179#discussion_r278642763
 
 

 ##########
 File path: core/src/main/java/org/apache/carbondata/core/datamap/status/DataMapStatusManager.java
 ##########
 @@ -127,4 +150,115 @@ private static DataMapSchema getDataMapSchema(String dataMapName)
     return DataMapStoreManager.getInstance().getDataMapSchema(dataMapName);
   }
 
+  /**
+   * Returns valid segment list for a given RelationIdentifier
+   *
+   * @param relationIdentifier
+   * @return
+   * @throws IOException
+   */
+  public static List<String> getSegmentList(RelationIdentifier relationIdentifier)
+      throws IOException {
+    List<String> segmentList = new ArrayList<>();
+    AbsoluteTableIdentifier absoluteTableIdentifier =
+        AbsoluteTableIdentifier.from(relationIdentifier.getTablePath());
+    List<Segment> validSegments =
+        new SegmentStatusManager(absoluteTableIdentifier).getValidAndInvalidSegments()
+            .getValidSegments();
+    for (Segment segment : validSegments) {
+      segmentList.add(segment.getSegmentNo());
+    }
+    return segmentList;
+  }
+
+  /**
+   * This method will delete segment folders of the mv datamap table and update the
+   * datamapSegmentStatus map in case of Insert-Overwrite/Update operation on main table
 
 Review comment:
   Okay..done

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