On Mon, May 19, 2014 at 12:05 PM, Vladimir Rodionov <vladrodio...@gmail.com>wrote:
> Michael S. > >> To the best of my knowledge, MapR’s M7 doesn’t have coprocessors. I’ll > wager that when they do, it will work and not have these issues. I believe > that they are writing their stuff in C/C++, if so, then they’d have an > advantage of using shared memory. Apache would have write C/C++ code and > wrap it in JNI… which you may not want to do…<< > > MapR M7 does not support coprocessors and custom Filters as well. I > consider this to be a serious limitation of the product. > Shared memory communication can be done in Java w/o single line of C/C++ > code, Michael by means of memory-mapped files. > > -Vladimir > > And even in native code, shared memory for communication between untrusted peers can be pretty tricky to do securely (read http://lwn.net/Articles/593918/ for details) -Todd -- Todd Lipcon Software Engineer, Cloudera
