Trusty juju-mongodb doesn't support js for the juju-store

[Bodie Solomon]

Note: this doesn't happen under Saucy (juju-mongodb setup; mongod --version reports 2.4.6 under Saucy.) juju-mongodb is set up on Trusty and reports version 2.4.9. Tests fail with the following results:

----------------------

FAIL: server_test.go:201: StoreSuite.TestCharmStreaming

[LOG] 36.85478 Resetting stats
[LOG] 36.85478 Cluster 0xc21010c2a0 acquired (refs=2)
[LOG] 36.85478 New session 0xc210123dc0 on cluster 0xc21010c2a0
[LOG] 36.85478 Session 0xc210123dc0: setting mode 0 with refresh=true (master=0x0, slave=0x0)
[LOG] 36.85478 Cluster 0xc21010c2a0 released (refs=1)
[LOG] 36.85478 Cluster has 0 known masters and 0 known slaves.
[LOG] 36.85478 Waiting for servers to synchronize...
[LOG] 36.85478 Socket 0xc210151ee0 to localhost:50017: killed again: read tcp 127.0.0.1:50017: use of closed network connection (previously: Closed explicitly)
[LOG] 36.85478 SYNC Cluster 0xc21010c2a0 is starting a sync loop iteration.

... snip ...

[LOG] 36.85478 Closing session 0xc210061c60
[LOG] 36.85478 Cluster 0xc2101b5620 released (refs=1)
server_test.go:217:
    // Check that it was accounted for in statistics.
    s.checkCounterSum(c, []string{"charm-bundle", curl.Series, curl.Name}, false, 1)
server_test.go:190:
    c.Assert(err, gc.IsNil)
... value *mgo.QueryError = &mgo.QueryError{Code:16149, Message:"exception: cannot run map reduce without the js engine", Assertion:false} ("exception: cannot run map reduce without the js engine")

[Dave Cheney (dave-cheney)]

This is not a juju bug, this is the store. This does not affect juju-core.

The store should have moved out of the Juju codebase a long time ago, when it does, this error will go away because the store expects to be deployed against the 'real' mongodb-server package, not our specialised version

[Curtis Hovey (sinzui)]

I understand the store will be separated out in a few weeks. I only see the project for the aborted effort a few weeks ago though.

[Dave Cheney (dave-cheney)]

I don't think this can be removed from the 1.17 milestone.

Anyone using trusty will

a. be told by juju that they need to install the juju-mongodb package, that change was landed yesterday
b. the juju-mongodb package is incompatible with the store tests

This means juju will not pass CI testing on trusty.