[MAPREDUCE-1869] TaskTracker hangs due to Java's usage of fork() being MT-unsafe

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Won't Fix
• Affects Version/s: 0.20.2
• Component/s: tasktracker

Environment

Solaris 10 Update 7
Java 1.6.0_14

• Assignee: Unassigned
• Reporter: Allen Wittenauer
• Created: 15/Jun/10 22:56
• Updated: 02/Nov/11 17:40
• Resolved: 02/Nov/11 17:40

Description

A TaskTracker process on our grid appears to be locked up and not sending heartbeats to the namenode. Attaching jstack and pstack output. Even tho the hangs appear to be in LocalDirAllocator, the local file system seems to be a-ok.