Senior Researcher at IBM
Dr. Kazuaki Ishizaki is a senior technical staff member at IBM Research - Tokyo. He has over 25 years of experience conducting research and development of dynamic compilers for Java and other languages. He is an expert in compiler optimizations, runtime systems, and parallel processing. He has been working for IBM Java just-in-time compiler and virtual machine from JDK 1.0 to Java 8. He is an Apache Spark and Arrow committer. He is an ACM distinguished member.
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Goodbye Hell of Unions in Spark SQL