[ https://issues.apache.org/jira/browse/HADOOP-4490?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sreekanth Ramakrishnan updated HADOOP-4490: ------------------------------------------- Attachment: HADOOP-4490-3.patch Attaching a patch which resolves the NullPointerException raised when TT is re-inted. The problem was with race condition in which JVMRunner was issued kill before it launched the task. The patch now checks if the inital context is set. i.e task is launched if not, it merely updates the data structures. > Map and Reduce tasks should run as the user who submitted the job > ----------------------------------------------------------------- > > Key: HADOOP-4490 > URL: https://issues.apache.org/jira/browse/HADOOP-4490 > Project: Hadoop Core > Issue Type: Sub-task > Components: mapred, security > Reporter: Arun C Murthy > Assignee: Hemanth Yamijala > Fix For: 0.21.0 > > Attachments: HADOOP-4490-1.patch, HADOOP-4490-1.patch, > HADOOP-4490-2.patch, HADOOP-4490-3.patch, hadoop-4490-design.pdf, > HADOOP-4490.patch, HADOOP-4490.patch, HADOOP-4490.patch, HADOOP-4490.patch, > HADOOP-4490.patch, HADOOP-4490.patch, HADOOP-4490.patch, > HADOOP-4490_streaming.patch > > > Currently the TaskTracker spawns the map/reduce tasks, resulting in them > running as the user who started the TaskTracker. > For security and accounting purposes the tasks should be run as the job-owner. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.