[MESOS-6330] Send TASK_UNKNOWN during explicit reconciliation

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: master
• Labels: mesosphere reconciliation
• Epic Link: PARTITION_AWARE-improvements
• Assignee: Neil Conway
• Reporter: Neil Conway
• Shepherd: Vinod Kone
• Created: 07/Oct/16 14:46
• Updated: 21/Oct/16 21:24
• Resolved: 21/Oct/16 21:24

Description

In Mesos <= 1.0, we send TASK_LOST for explicit reconciliation requests for (a) tasks running on agents the master has never heard about, and (b) unknown tasks running at registered agents.

For partition-aware frameworks in Mesos >= 1.1, we should instead send TASK_UNKNOWN in these situations.

Issue Links

• contains: MESOS-6250 Ensure valid task state before connecting with framework on master failover