[DRILL-1427] Failure to initialize storage plug-in results in complete failure of drill-bit initialization

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.5.0
• Fix Version/s: 0.6.0
• Component/s: Functions - Drill

Environment

Observed on CentOS 6.4 on AWS instances

• Assignee: Aditya Kishore
• Reporter: David Tucker
• Created: 17/Sep/14 03:38
• Updated: 01/Dec/16 18:56
• Resolved: 01/Oct/14 07:01

Description

The storage plug-in configuration screen identifies when a plug-in fails to initializes (eg the Hive server is down) and will leave the plug-in disabled (or fail to creat it altogether). However, if a configured storage plug-in is not on line when the drill-bit is launched, all attempts at interactive queries (via sqlline or ODBC) fail to proceed. The impression left with the user is that the drill-bit is completely off-line.

To reproduce:
1. configure Hive storage plug-in and execute simple queries
2. shut down drill-bit
3. shut down Hive server
4. re-launch the drill-bit
5. launch sqlline
... no connection will be established, no queries will be possible

Issue Links

• is related to: DRILL-5089 Skip initializing all enabled storage plugins for every query