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Posted to user@hbase.apache.org by Jack Levin <ma...@gmail.com> on 2011/04/21 02:15:58 UTC

get vs read

How does "get ave. time" differs from "read average time"?  What is
the definition of thereof?

-Jack

Re: get vs read

Posted by Jean-Daniel Cryans <jd...@apache.org>.

Right ok so that metric is the average time to read from HDFS. One Get
might end up being many reads (or none if your block cache has all the
required data), so there's no one-to-one relationship.

J-D

On Thu, Apr 21, 2011 at 12:54 PM, Jack Levin <ma...@gmail.com> wrote:
> Yes, sorry fsReadLatency_avg_time is the one.
>
> -Jack
>
> On Thu, Apr 21, 2011 at 11:06 AM, Jean-Daniel Cryans
> <jd...@apache.org> wrote:
>> The get average time is the average time for a Get to execute.
>>
>> The other metric... I don't see it. Are you talking about
>> "fsReadLatency_avg_time"?
>>
>> J-D
>>
>> On Wed, Apr 20, 2011 at 5:15 PM, Jack Levin <ma...@gmail.com> wrote:
>>> How does "get ave. time" differs from "read average time"?  What is
>>> the definition of thereof?
>>>
>>> -Jack
>>>
>>
>

Re: get vs read

Posted by Jack Levin <ma...@gmail.com>.

Yes, sorry fsReadLatency_avg_time is the one.

-Jack

On Thu, Apr 21, 2011 at 11:06 AM, Jean-Daniel Cryans
<jd...@apache.org> wrote:
> The get average time is the average time for a Get to execute.
>
> The other metric... I don't see it. Are you talking about
> "fsReadLatency_avg_time"?
>
> J-D
>
> On Wed, Apr 20, 2011 at 5:15 PM, Jack Levin <ma...@gmail.com> wrote:
>> How does "get ave. time" differs from "read average time"?  What is
>> the definition of thereof?
>>
>> -Jack
>>
>

Re: get vs read

Posted by Jean-Daniel Cryans <jd...@apache.org>.

The get average time is the average time for a Get to execute.

The other metric... I don't see it. Are you talking about
"fsReadLatency_avg_time"?

J-D

On Wed, Apr 20, 2011 at 5:15 PM, Jack Levin <ma...@gmail.com> wrote:
> How does "get ave. time" differs from "read average time"?  What is
> the definition of thereof?
>
> -Jack
>