stczwd commented on a change in pull request #29088:
URL: https://github.com/apache/spark/pull/29088#discussion_r454791986
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CsvOutputWriter.scala
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@@ -39,6 +39,10 @@ class CsvOutputWriter(
private val gen = new UnivocityGenerator(dataSchema, writer, params)
+ if (params.bom) {
+ writer.write(0xFEFF)
Review comment:
Excel. It will change the actual value if we add `0xFEFF` in the front.
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