HyukjinKwon commented on a change in pull request #30484:
URL: https://github.com/apache/spark/pull/30484#discussion_r547339218



##########
File path: 
sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/SpecificParquetRecordReaderBase.java
##########
@@ -94,47 +92,14 @@ public void initialize(InputSplit inputSplit, 
TaskAttemptContext taskAttemptCont
     Configuration configuration = taskAttemptContext.getConfiguration();
     ParquetInputSplit split = (ParquetInputSplit)inputSplit;
     this.file = split.getPath();
-    long[] rowGroupOffsets = split.getRowGroupOffsets();
-
-    ParquetMetadata footer;
-    List<BlockMetaData> blocks;
-
-    // if task.side.metadata is set, rowGroupOffsets is null
-    if (rowGroupOffsets == null) {

Review comment:
       Yeah, let's add an assert. That sounds like a good idea.




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