gortiz commented on code in PR #12242:
URL: https://github.com/apache/pinot/pull/12242#discussion_r1454925120


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pinot-segment-local/src/main/java/org/apache/pinot/segment/local/segment/index/readers/forward/VarByteChunkSVForwardIndexReader.java:
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@@ -85,6 +85,10 @@ private String getStringCompressed(int docId, 
ChunkReaderContext context) {
 
     int length = valueEndOffset - valueStartOffset;
     byte[] bytes = _reusableBytes.get();
+    if (bytes.length < _lengthOfLongestEntry) {

Review Comment:
   It is clear that having a `ThreadLocal<byte[]>` per column is bad. My 
understanding is that you are proposing two solutions:
   1. Either use a single ThreadLocal byte[] per thread.
   2. Move the byte[] to reader context.
   
   I think `2` is better, but I'm fine with `1` as well.



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