[ASTERIXDB-1074] Feeds tutorial is outdated or doesn't work

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Component/s: *DB - AsterixDB
• Labels: 0.8.7-blocker
• Assignee: Ian Maxon
• Reporter: Ian Maxon
• Created: 18/Aug/15 00:02
• Updated: 30/Sep/15 19:50
• Resolved: 30/Sep/15 19:50

Description

I can't seem to create a vanilla feed, using the push-based twitter adapter, as is in the new tutorial in the docs.

I create the feed using the specified syntax

create feed TwitterFeed if not exists using "push_twitter"
(("type-name"="Tweet"),("location"="US"));

And a dataset that is of the right type

create dataset Tweets(Tweet) primary key id;

But trying to connect it fails

connect feed TwitterFeed to dataset Tweets;

With this error, which doesn't really make a lot of sense considering this adapter is baked in

unable to create adapter java.lang.ClassNotFoundException: push_twitter [AlgebricksException]

And what is more bewildering, is that if I drop, create, and reconect the feed- it doesn't throw an exception any longer, but it doesn't actually work either. All that appears in the logs is this:

Aug 11, 2015 12:20:34 PM edu.uci.ics.asterix.aql.translator.AqlTranslator getFeedConnectionRequest
INFO: Feed joint feeds.TwitterFeed: [SOURCE_FEED_INTAKE_STAGE][CREATED] is available! need not apply any further computation