[GIRAPH-904] Giraph can hang when hostnames include uppercase letters

• Type: Bug
• Status: Reopened
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.1.0
• Fix Version/s: 1.1.0
• Component/s: bsp, conf and scripts, zookeeper
• Assignee: Jaeho Shin
• Reporter: Jaeho Shin
• Created: 30/May/14 07:43
• Updated: 02/Dec/16 17:32

Description

We found that Giraph jobs were consistently hanging if uppercase letters were included in the DNS (or /etc/hosts) resolved hostnames (foo.stanford.edu vs. foo.Stanford.EDU from our DNS). Normalizing the hostnames to lower case from GiraphConfiguration#getLocalHostname() fixed our problem.