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HDFS, mail # user - Re: metric type


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lei liu 2013-09-01, 10:57
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Re: metric type
lei liu 2013-09-06, 06:05
Hello,

Can anybody answer the question?
2013/9/1 lei liu <[EMAIL PROTECTED]>

> Hi Jitendr, thanks for your reply.
>
> If MutableCounterLong is uesed to IO/sec statistics, I think the value of MutableCounterLong
> should be divided by 10 and be reseted to zero per ten seconds in MutableCounterLong.snapshot
> method, is that right? But MutableCounterLong.snapshot method don't do
> that. I missed anything please tell me. Looking forward to your reply.
>
> Thanks,
> LiuLei
>
>
> 2013/9/1 Jitendra Yadav <[EMAIL PROTECTED]>
>
>> 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
>> >> >>
>> >> >>
>> >> >
>> >>
>> >
>>
>
>