hadoop-mapreduce-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From David Rosenstrauch <dar...@darose.net>
Subject Out of memory (heap space) errors on job tracker
Date Fri, 08 Jun 2012 15:26:42 GMT
Our job tracker has been seizing up with Out of Memory (heap space) 
errors for the past 2 nights.  After the first night's crash, I doubled 
the heap space (from the default of 1GB) to 2GB before restarting the 
job.  After last night's crash I doubled it again to 4GB.

This all seems a bit puzzling to me.  I wouldn't have thought that the 
job tracker should require so much memory.  (The NameNode, yes, but not 
the job tracker.)

Just wondering if this behavior sounds reasonable, or if perhaps there 
might be a bigger problem at play here.  Anyone have any thoughts on the 



View raw message