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...is being freed, so we can unmap the associated memory/file. Ffbase maintainer Edwin de Jonge was even skeptical that CRAN would accept a package implementing the hack I had proposed to simulate native R vectors from mmap'ed 'ff' vectors. The issue is discussed here: https://github.com/edwindj/ffbase/issues/52 Of course, weak references and external pointers allow finalizers to be assigned to objects, but as I understand it, such objects are separate types from vectors - there is no way in R to synthesize a native vector endowed with a finalizer - something which could be passed directl...

On 4 September 2017 at 11:35, Suzen, Mehmet wrote: | It is not needed. There is a large community of developer using SparkR. | https://spark.apache.org/docs/latest/sparkr.html | It does exactly what you want. I hope you are not going to mail a sparkr commercial to this list every day. As the count is now at two, this may be an excellent good time to stop it. Dirk --