Protect Job Tracker against memory exhaustion due to very large InputSplit or JobConf objects ---------------------------------------------------------------------------------------------
Key: MAPREDUCE-841 URL: https://issues.apache.org/jira/browse/MAPREDUCE-841 Project: Hadoop Map/Reduce Issue Type: Improvement Components: jobtracker Affects Versions: 0.20.1 Reporter: Hong Tang Fix For: 0.21.0 JobTracker only needs to examine a subset of information contained by InputSplit or JobConf objects. But currently JobTracker loads the complete user-defined InputSplit and JobConf objects in memory. This design would leave JobTracker susceptible to memory exhaustion particularly in cases when some bugs in user code which could result in very large input splits or job conf objects (e.g. PIG-901). -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.