It depends on the expected load on the region server and whether the same machine is used by other processes (such as DataNode / TaskTracker).
As a first step, you can try 1.5GB Cheers On Thu, Nov 7, 2013 at 7:57 PM, GuoWei <[email protected]> wrote: > Can I increase to 1.5 G ? > > I have 4G total for region server. > > Thanks > 在 2013年11月8日，上午11:57，Ted Yu <[email protected]> 写道： > > Please increase heap size - 617MB is too small. > > > On Thu, Nov 7, 2013 at 7:52 PM, GuoWei <[email protected]> wrote: > >> My Region server configuration as below: >> >> <屏幕快照 2013-11-08 上午11.47.52.png> >> >> >> Should I set Java Heap Size to more ? The region server have 4 G memory >> total. >> >> >> >> >> 在 2013年11月8日，上午11:37，Ted Yu <[email protected]> 写道： >> >> The attachment didn't go through. >> >> Can you pastebin the logs ? >> >> What was GC like before the crash ? >> >> How much heap did you give your region servers ? >> >> Cheers >> >> >> On Thu, Nov 7, 2013 at 7:28 PM, GuoWei <[email protected]> wrote: >> >>> Dear, >>> >>> Recently when I use CDH 4.0 to do M/R job. I always let Region Server >>> Crashed. Attached are region server logs. >>> >>> And In my M/R program , I set job reduceTaskNum to 4. Because I have two >>> data nodes each configured 2 reduce slots. >>> >>> Please help me find why ? >>> >>> >>> Thanks a lot. >>> >>> >>> >>> BR >>> Brad >> >> >> >> > >
