Yes, MutableCounterLong helps to gather DataNode read/write statics. There is more option available within this metric
Regards Jitendra On 8/31/13, lei liu <[email protected]> wrote: > There is @Metric MutableCounterLong bytesWritten attribute in > DataNodeMetrics, which is used to IO/sec statistics? > > > 2013/8/31 Jitendra Yadav <[email protected]> > >> Hi, >> >> For IO/sec statistics I think MutableCounterLongRate and >> MutableCounterLong more useful than others and for xceiver thread >> number I'm not bit sure right now. >> >> Thanks >> Jiitendra >> On Fri, Aug 30, 2013 at 1:40 PM, lei liu <[email protected]> wrote: >> > >> > Hi Jitendra, >> > If I want to statistics number of bytes read per second,and display the >> result into ganglia, should I use MutableCounterLong or MutableGaugeLong? >> > >> > If I want to display current xceiver thread number in datanode into >> ganglia, should I use MutableCounterLong or MutableGaugeLong? >> > >> > Thanks, >> > LiuLei >> > >> > >> > 2013/8/30 Jitendra Yadav <[email protected]> >> >> >> >> Hi, >> >> >> >> Below link contains the answer for your question. >> >> >> >> >> http://hadoop.apache.org/docs/r1.2.0/api/org/apache/hadoop/metrics2/package-summary.html >> >> >> >> Regards >> >> Jitendra >> >> >> >> On Fri, Aug 30, 2013 at 11:35 AM, lei liu <[email protected]> wrote: >> >>> >> >>> I use the metrics v2, there are COUNTER and GAUGE metric type in >> metrics v2. >> >>> What is the difference between the two？ >> >>> >> >>> Thanks, >> >>> LiuLei >> >> >> >> >> > >> >
