[TAJO-250] QueryMaster must send the query finish heartbeat.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.2-incubating
• Component/s: QueryMaster, Web UI
• Assignee: Hyunsik Choi
• Reporter: Hyunsik Choi
• Created: 13/Oct/13 14:20
• Updated: 14/Oct/13 09:39
• Resolved: 13/Oct/13 14:55

Description

In the current implementation, QueryMaster only depends on its heartbeat thread for all kinds of reports. When a query master task without any succeeded report is moved to the finished list, the finish report may be omitted. As a result, QueryJobManager occasionally does not update the finish state (e.g., finish time and query state) for some queries even though the queries are already finished. This patch fixes this bug.