[ https://issues.apache.org/jira/browse/MAPREDUCE-1740?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alejandro Abdelnur updated MAPREDUCE-1740: ------------------------------------------ Resolution: Fixed Assignee: Ahmed Radwan Hadoop Flags: Reviewed Status: Resolved (was: Patch Available) Thanks Ahmed. Committed to trunk and branch-1 > NPE in getMatchingLevelForNodes when node locations are variable depth > ---------------------------------------------------------------------- > > Key: MAPREDUCE-1740 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-1740 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: jobtracker > Affects Versions: 0.20.3 > Reporter: Todd Lipcon > Assignee: Ahmed Radwan > Attachments: MAPREDUCE-1740.patch, MAPREDUCE-1740_branch-1.0.patch, > MAPREDUCE-1740_trunk.patch, mapreduce-1740.txt > > > In getMatchingLevelForNodes, we assume that both nodes have the same "depth" > (ie number of path components). If the user provides a topology script that > assigns one node a path like /foo/bar/baz and another node a path like > /foo/blah, this function will throw an NPE. > I'm not sure if there are other places where we assume that all node > locations have a constant number of paths. If so we should check the output > of the topology script aggressively to be sure this is the case. Otherwise I > think we simply need to add && n2 != null to the while loop -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira