read snapshots? [JIRA: RIAK-2321]

[benoitc]

Reading the code it seems that read snapshots [1] are not supported. Did I miss something? Do you plan to add such support?

[1] http://leveldb.googlecode.com/svn/trunk/doc/index.html

[slfritchie]

Added 2.1 milestone, subject to further planning review.

[benoitc]

Looks like https://github.com/basho/eleveldb/compare/arg-snapshot-2 is implementing it. I wonder if anyone tried it.

[benoitc]

I would like to relaunch the discussion here. What I would like is having a way to read concurrently from writing. So eventually read could be done in another process. Is there a way to do that right now? Does the iterator provides a snapshot view of the db?

[Basho-JIRA]

Yes. Iterator is a snapshot view. Iterator, once constructed, can Seek to closest key as well as traverse Next and Prev.

_[posted via JIRA by Matthew Von-Maszewski]_

[benoitc]

can the iterator be passed to another erlang process ?

[Basho-JIRA]

Erlang process on same machine, yes. Linux process no.

_[posted via JIRA by Matthew Von-Maszewski]_

[benoitc]

Yes I meant , opening an iterator and use the ref in another process that will eventually close it. would it work?