It's really not going to be useful to guess without more log investigation.check the master node logs to see when the first region server went down and correlate zookeeper and region server logs to the minute or two before it died.
It could be garbage collection or high scan batches killing your servers occasionally. On May 20, 2014 3:17 AM, "Flavio Pompermaier" <[email protected]> wrote: > Hi to all, > > I'm using Cloudera CDH4 (4.5.0) with default parameters and HBase 0.94.6. > I'm experiencing a bad behaviour of my mapreduce jobs, where region servers > keep crashing. I checked the logs and the region servers seems to die > without logging anything..this seems to happen at the 2nd or 3rd times I > submit a job..can someone help me in figuring out what's happening? > > Thanks in advance, > Flavio >
