[HAMA-571] Provide graph repair function in GraphJobRunner

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.5.0
• Component/s: bsp core, graph
• Assignee: Thomas Jungblut
• Reporter: Thomas Jungblut
• Created: 08/May/12 18:08
• Updated: 17/May/12 23:17
• Resolved: 17/May/12 13:07

Description

As discussed here, we want to add a configurable checker that repairs maybe broken graph adjacency lists.

http://mail-archives.apache.org/mod_mbox/incubator-hama-user/201204.mbox/%3CCAJ-%3DysmSdYoX5t1pPjGi0KXWM%3DYVN2s8CoCgw5V3jXU3F74MHw%40mail.gmail.com%3E

Currently each vertex addressed in an edge by the adjacency list is needed on the vertex map somewhere in the cluster.
If that vertex isn't available it will result in NullPointerExceptions.
Pseudocode is attached in that mail archive.