taiyang-li commented on code in PR #8023:
URL: https://github.com/apache/incubator-gluten/pull/8023#discussion_r1862893655


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cpp-ch/local-engine/Common/CHUtil.cpp:
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@@ -710,6 +710,7 @@ void BackendInitializerUtil::initSettings(const 
SparkConfigs::ConfigMap & spark_
     settings.set("max_parsing_threads", 1);
     settings.set("max_download_threads", 1);
     settings.set("input_format_parquet_enable_row_group_prefetch", false);
+    settings.set("output_format_parquet_use_custom_encoder", false);

Review Comment:
   @baibaichen can you review it. The parquet read/write inconsistency related 
to nullable complex types would happen if the settings is true(default). 



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