siddharthteotia commented on code in PR #9810:
URL: https://github.com/apache/pinot/pull/9810#discussion_r1038883362


##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/segment/index/loader/ForwardIndexHandler.java:
##########
@@ -136,11 +139,28 @@ public void updateIndices(SegmentDirectory.Writer 
segmentWriter, IndexCreatorPro
           // forward index here which is dictionary based and allow the post 
deletion step handle the actual deletion
           // of the forward index.
           createDictBasedForwardIndex(column, segmentWriter, 
indexCreatorProvider);
-          Preconditions.checkState(segmentWriter.hasIndexFor(column, 
ColumnIndexType.FORWARD_INDEX),
-              String.format("Temporary forward index was not created for 
column: %s", column));
+          if (!segmentWriter.hasIndexFor(column, 
ColumnIndexType.FORWARD_INDEX)) {
+            throw new IOException(String.format("Temporary forward index was 
not created for column: %s", column));
+          }
           _forwardIndexDisabledColumnsToCleanup.add(column);
           break;
         }
+        case ENABLE_FORWARD_INDEX_FOR_DICT_COLUMN: {
+          createForwardIndexIfNeeded(segmentWriter, 
_segmentMetadata.getColumnMetadataFor(column), indexCreatorProvider,
+              false);
+          if (!segmentWriter.hasIndexFor(column, ColumnIndexType.DICTIONARY)) {
+            throw new IOException(String.format("Dictionary is not present for 
dictionary based column: %s", column));

Review Comment:
   Not sure I follow this. Shouldn't this check be done before line 149 ?



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