arthurpassos commented on code in PR #35825:
URL: https://github.com/apache/arrow/pull/35825#discussion_r1229936850


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cpp/src/parquet/arrow/reader.cc:
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@@ -462,7 +463,8 @@ class LeafReader : public ColumnReaderImpl {
         input_(std::move(input)),
         descr_(input_->descr()) {
     record_reader_ = RecordReader::Make(

Review Comment:
   Qq: Is there some sort of documentation that illustrates how all of these 
Encoders/Decoders/Dictionaries/FileREaders/RecordReaders, arrow and parquet, 
interact with each other? I checked on 
https://github.com/apache/arrow/tree/main/docs/source/developers/cpp, but 
couldn't find it.
   
   It's getting very hard for me to reason about some of the questions you 
raise like this last comment. I either need to take a step back and investigate 
how the lib is architectured and how components interact with each other or ask 
for more help from you.
   
   Sorry for that.
   
   @wgtmac @mapleFU 



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