dkranchii commented on code in PR #18405:
URL: https://github.com/apache/pinot/pull/18405#discussion_r3192218460


##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/segment/store/FilePerIndexDirectory.java:
##########
@@ -99,8 +103,15 @@ public void close()
 
   @Override
   public void removeIndex(String columnName, IndexType<?, ?, ?> indexType) {
-    // TODO: this leaks the removed data buffer (it's not going to be freed in 
close() method)
-    _indexBuffers.remove(new IndexKey(columnName, indexType));
+    PinotDataBuffer removedBuffer = _indexBuffers.remove(new 
IndexKey(columnName, indexType));
+    if (removedBuffer != null) {
+      try {
+        removedBuffer.close();

Review Comment:
   @xiangfu0 Thanks for catching this. Updated the implementation based on your 
suggestion.



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