diff --git a/cpp/src/arrow/compute/row/row_internal.cc b/cpp/src/arrow/compute/row/row_internal.cc
index 469205e9b008d..43063daa3a0c2 100644
--- a/cpp/src/arrow/compute/row/row_internal.cc
+++ b/cpp/src/arrow/compute/row/row_internal.cc
@@ -297,10 +297,11 @@ Status RowTableImpl::ResizeOptionalVaryingLengthBuffer(int64_t num_extra_bytes)
     return Status::OK();
   }
 
-  int64_t bytes_capacity_new = std::max(static_cast<int64_t>(1), 2 * bytes_capacity_);
-  while (bytes_capacity_new < num_bytes + num_extra_bytes) {
-    bytes_capacity_new *= 2;
-  }
+  // int64_t bytes_capacity_new = std::max(static_cast<int64_t>(1), 2 * bytes_capacity_);
+  // while (bytes_capacity_new < num_bytes + num_extra_bytes) {
+  //   bytes_capacity_new *= 2;
+  // }
+  int64_t bytes_capacity_new = num_bytes + num_extra_bytes;
 
   RETURN_NOT_OK(rows_->Resize(size_rows_varying_length(bytes_capacity_new), false));
   memset(rows_->mutable_data() + size_rows_varying_length(bytes_capacity_), 0,