[ASTERIXDB-1860] Inconsistent behavior w.r.t. connecting/disconnecting feed to a non-existing dataset

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Component/s: ING - Ingestion
• Assignee: Xikui Wang
• Reporter: Chen Luo
• Created: 26/Mar/17 18:33
• Updated: 27/Mar/17 21:58
• Resolved: 27/Mar/17 21:58

Description

Connecting a feed to a non-existing dataset (whose name is 'unknown_dataset') is successful, and the system shows the message:

Success: Query Complete.

However, disconnecting this feed to this dataset is rejected with error message:

Unknown target dataset :unknown_dataset [CompilationException].

Then, connecting this feed to the dataset again gives:

FeedTweetFeed is already connected dataset unknown_dataset [AlgebricksException].

Thus, it seems once a feed is connected to a non-existing dataset, it cannot be disconnected from it.

Steps to reproduce:

1. create a feed named Feed1;
2. connect Feed1 to a non-existing dataset, e.g., unknown_dataset:

   connect feed Feed1 to dataset unknown_dataset;
   

   Now Feed1 is successfully connected to unknown_dataset.

3. disconnect Feed1 from unknown_dataset:

   disconnect feed Feed1 from dataset unknown_dataset;
   

   This command is rejected because unknown_dataset is not existing.

4. connect Feed1 to unknown_dataset again:

   connect feed Feed1 to dataset unknown_dataset;
   

   The system shows Feed1 is already connected to unknown_dataset.