I need a Spark Developer for Helping in Performance issues while upgrading from spark 2.2 to Spark 3.1.2

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HELLO DEAR CLIENT I have gone through your project details, having all the required skills (Spark, Scala, Hadoop, Software Architecture and MySQL)and VAST EXPERIENCE.I confirm to you that the project is doable since its within my area of EXPERTISE. Timely and Good work is 100% guaranteed. I present my bid to you and thanks in advance as you consider me

I have good experince with spark performance tuning. We can connect to discuss more about the issue.