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kambhamvivekshankarGitHub
89a65b06a19
kambhamvivekshankar authored and GitHub committed 8a5aa671829
ARROW-18209: [Java] Make ComplexCopier agnostic of specific implementation of MapWriter (UnionMapWriter) (#14557)

Making ComplexCopier independent of UnionMapWriter lets us use different implementations, like PromotableWriter instead. This helps us to copy map vector with a map value. Otherwise we get the following error: ClassCast class org.apache.arrow.vector.complex.impl.PromotableWriter cannot be cast to class org.apache.arrow.vector.complex.impl.UnionMapWriter

Lead-authored-by: Kambham Vivek Shankar <v_706@yahoo.com>
Co-authored-by: kambhamvivekshankar <v_706@yahoo.com>
Signed-off-by: David Li <li.davidm96@gmail.com>