Re: Heartbeat between RM and AM

2017-01-06 Thread Sultan Alamro
Hi Sunil,

Thank you for your reply.

I don't mean the heartbeat interval. Based on my knowledge, the AM report a
job's progress every t ms, so I need to add more info to the messages
between the AM and RM.



On Mon, Jan 2, 2017 at 4:56 AM, Sunil Govind  wrote:

> Hi
>
> If you are thinking about allocation requests heartbeat calls from AM to
> RM, then its mostly driven per application level (not YARN specific
> config). For eg: in MapReduce, below config is used for same.
> yarn.app.mapreduce.am.scheduler.heartbeat.interval-ms
>
> Thanks
> Sunil
>
>
> On Sat, Dec 31, 2016 at 8:20 AM Sultan Alamro 
> wrote:
>
>> Hi all,
>>
>> Can any one tell me how I can modify the heartbeat between the RM and AM?
>> I need to add new requests to the AM from the RM.
>>
>> These requests basically are values calculated by the RM to be used by
>> the AM online.
>>
>> Thanks,
>> Sultan
>>
>


Re: Why is the size of a HDFS file changed?

2017-01-06 Thread Ravi Prakash
Is there a carriage return / new line / some other whitespace which `cat`
may be appending?

On Thu, Jan 5, 2017 at 6:09 PM, Mungeol Heo  wrote:

> Hello,
>
> Suppose, I name the HDFS file which cause the problem as A.
>
> hdfs dfs -ls A
> -rw-r--r--   3 web_admin hdfs  868003931 2017-01-04 09:05 A
>
> hdfs dfs -get A AFromGet
> hdfs dfs -cat A > AFromCat
>
> ls -l
> -rw-r--r-- 1 hdfs hadoop 883715443 Jan  5 18:32 AFromGet
> -rw-r--r-- 1 hdfs hadoop 883715443 Jan  5 18:32 AFromCat
>
> hdfs dfs -put AFromGet
>
> diff <(hdfs dfs -cat  A) <(hdfs dfs -cat AFromGet)
> (no output, which means the contents of two files are same. At least,
> after "cat")
>
> hdfs dfs -checksum A
> A   MD5-of-262144MD5-of-512CRC32C
> 0204e667fb4f0dda78101feb2b689af8260b
>
> hdfs dfs -checksum AFromGet
> AFromGet   MD5-of-262144MD5-of-512CRC32C
> 02047284759249ff98c7395e6a4bb59343dc
>
> As I listed some results above. I wonder why is the size of the file
> changed.
> Any help will be GREAT!
>
> Thank you.
>
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