Re: data type is object when metric instrument using Gauge?

2014-08-05 Thread Ken Hancock 
If you look at VisualVM metadata, it'll show that what's return is
java.lang.Object which is different than Meters or Counters.

Looking at the source for metrics-core, it seems that this is a feature
of Gauges because unlike Meters or Counters, Gauges can be of various types
-- long, double, etc.  Cassandra source sets them up as longs, however the
JMXReporter class in metrics-core always exposes them as Objects.




On Mon, Aug 4, 2014 at 7:32 PM, Patricia Gorla patri...@thelastpickle.com
wrote:

 Mike,

 What metrics reporter are you using? How are you attempting to access the
 metric?



 On Sat, Aug 2, 2014 at 7:30 AM, mike maomao...@gmail.com wrote:

 Dear All

   We are trying to monitor Cassandra using JMX. The monitoring tool we
 are using works fine for meters, However, if the metrcis are collected
 using gauge, the data type is object, then, our tool treat it as a string
 instead of a double. for example

 org.apache.cassandra.metrics:type=Cache,scope=KeyCache,name=Capacity

 The Type of Attribute (Value) is java.lang.Object

 is it possible to implement the datatype of gauge as numeric types
 instead of object, or other way around for example using metric
 reporter...etc?

 Thanks a lot for any suggestion!

 Best Regard!
   Mike






 --
 Patricia Gorla
 @patriciagorla

 Consultant
 Apache Cassandra Consulting
 http://www.thelastpickle.com http://thelastpickle.com




-- 
*Ken Hancock *| System Architect, Advanced Advertising
SeaChange International
50 Nagog Park
Acton, Massachusetts 01720
ken.hanc...@schange.com | www.schange.com | NASDAQ:SEAC
http://www.schange.com/en-US/Company/InvestorRelations.aspx
Office: +1 (978) 889-3329 | [image: Google Talk:]
ken.hanc...@schange.com | [image:
Skype:]hancockks | [image: Yahoo IM:]hancockks [image: LinkedIn]
http://www.linkedin.com/in/kenhancock

[image: SeaChange International]
 http://www.schange.com/This e-mail and any attachments may contain
information which is SeaChange International confidential. The information
enclosed is intended only for the addressees herein and may not be copied
or forwarded without permission from SeaChange International.

Re: data type is object when metric instrument using Gauge?

2014-08-04 Thread Patricia Gorla 
Mike,

What metrics reporter are you using? How are you attempting to access the
metric?



On Sat, Aug 2, 2014 at 7:30 AM, mike maomao...@gmail.com wrote:

 Dear All

   We are trying to monitor Cassandra using JMX. The monitoring tool we are
 using works fine for meters, However, if the metrcis are collected using
 gauge, the data type is object, then, our tool treat it as a string instead
 of a double. for example

 org.apache.cassandra.metrics:type=Cache,scope=KeyCache,name=Capacity

 The Type of Attribute (Value) is java.lang.Object

 is it possible to implement the datatype of gauge as numeric types instead
 of object, or other way around for example using metric reporter...etc?

 Thanks a lot for any suggestion!

 Best Regard!
   Mike






-- 
Patricia Gorla
@patriciagorla

Consultant
Apache Cassandra Consulting
http://www.thelastpickle.com http://thelastpickle.com

data type is object when metric instrument using Gauge?

2014-08-02 Thread mike 

Dear All

  We are trying to monitor Cassandra using JMX. The monitoring tool we 
are using works fine for meters, However, if the metrcis are collected 
using gauge, the data type is object, then, our tool treat it as a 
string instead of a double. for example


org.apache.cassandra.metrics:type=Cache,scope=KeyCache,name=Capacity

The Type of Attribute (Value) is java.lang.Object

is it possible to implement the datatype of gauge as numeric types 
instead of object, or other way around for example using metric 
reporter...etc?


Thanks a lot for any suggestion!

Best Regard!
  Mike