mapleFU commented on code in PR #37400:
URL: https://github.com/apache/arrow/pull/37400#discussion_r1664359759


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cpp/src/parquet/column_writer.cc:
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@@ -154,6 +157,8 @@ inline const T* AddIfNotNull(const T* base, int64_t offset) 
{
   return nullptr;
 }
 
+constexpr int64_t kHashBatchSize = 256;

Review Comment:
   I think it's a writer-side logic currently?



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