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[jira] [Created] (ARROW-3243) [C++] Upgrade jemalloc to version 5

Philipp Moritz created ARROW-3243:

             Summary: [C++] Upgrade jemalloc to version 5
                 Key: ARROW-3243
                 URL: https://issues.apache.org/jira/browse/ARROW-3243
             Project: Apache Arrow
          Issue Type: Improvement
            Reporter: Philipp Moritz

Is it possible/feasible to upgrade jemalloc to version 5 and assume that version? I'm asking because I've been working towards replacing dlmalloc in plasma with jemalloc, which makes some of the code much nicer and removes some of the issues we had with dlmalloc, but it requires jemalloc APIs that are only available starting from jemalloc version 5, in particular, I'm using the extent_hooks_t capability.

For now I can submit a patch that uses a different version of jemalloc in plasma and then we can figure out how to deal with it (maybe there is a way to make it work with older versions). What are your thoughts?

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