Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Threaded View
MapReduce >> mail # user >> Distributing the code to multiple nodes


Copy link to this message
-
Re: Distributing the code to multiple nodes
Another point to add here 10.12.11.210 is the host which has everything
running including a slave datanode. Data was also distributed this host as
well as the jar file. Following are running on 10.12.11.210

7966 DataNode
8480 NodeManager
8353 ResourceManager
8141 SecondaryNameNode
7834 NameNode

On Thu, Jan 9, 2014 at 6:12 PM, Ashish Jain <[EMAIL PROTECTED]> wrote:

> Logs were updated only when I copied the data. After copying the data
> there has been no updates on the log files.
>
>
> On Thu, Jan 9, 2014 at 5:08 PM, Chris Mawata <[EMAIL PROTECTED]>wrote:
>
>> Do the logs on the three nodes contain anything interesting?
>> Chris
>>  On Jan 9, 2014 3:47 AM, "Ashish Jain" <[EMAIL PROTECTED]> wrote:
>>
>>> Here is the block info for the record I distributed. As can be seen only
>>> 10.12.11.210 has all the data and this is the node which is serving all the
>>> request. Replicas are available with 209 as well as 210
>>>
>>> 1073741857:         10.12.11.210:50010    View Block Info
>>> 10.12.11.209:50010    View Block Info
>>> 1073741858:         10.12.11.210:50010    View Block Info
>>> 10.12.11.211:50010    View Block Info
>>> 1073741859:         10.12.11.210:50010    View Block Info
>>> 10.12.11.209:50010    View Block Info
>>> 1073741860:         10.12.11.210:50010    View Block Info
>>> 10.12.11.211:50010    View Block Info
>>> 1073741861:         10.12.11.210:50010    View Block Info
>>> 10.12.11.209:50010    View Block Info
>>> 1073741862:         10.12.11.210:50010    View Block Info
>>> 10.12.11.209:50010    View Block Info
>>> 1073741863:         10.12.11.210:50010    View Block Info
>>> 10.12.11.209:50010    View Block Info
>>> 1073741864:         10.12.11.210:50010    View Block Info
>>> 10.12.11.209:50010    View Block Info
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> --Ashish
>>>
>>>
>>> On Thu, Jan 9, 2014 at 2:11 PM, Ashish Jain <[EMAIL PROTECTED]> wrote:
>>>
>>>> Hello Chris,
>>>>
>>>> I have now a cluster with 3 nodes and replication factor being 2. When
>>>> I distribute a file I could see that there are replica of data available in
>>>> other nodes. However when I run a map reduce job again only one node is
>>>> serving all the request :(. Can you or anyone please provide some more
>>>> inputs.
>>>>
>>>> Thanks
>>>> Ashish
>>>>
>>>>
>>>> On Wed, Jan 8, 2014 at 7:16 PM, Chris Mawata <[EMAIL PROTECTED]>wrote:
>>>>
>>>>> 2 nodes and replication factor of 2 results in a replica of each block
>>>>> present on each node. This would allow the possibility that a single node
>>>>> would do the work and yet be data local.  It will probably happen if that
>>>>> single node has the needed capacity.  More nodes than the replication
>>>>> factor are needed to force distribution of the processing.
>>>>>  Chris
>>>>> On Jan 8, 2014 7:35 AM, "Ashish Jain" <[EMAIL PROTECTED]> wrote:
>>>>>
>>>>>> Guys,
>>>>>>
>>>>>> I am sure that only one node is being used. I just know ran the job
>>>>>> again and could see that CPU usage only for one server going high other
>>>>>> server CPU usage remains constant and hence it means other node is not
>>>>>> being used. Can someone help me to debug this issue?
>>>>>>
>>>>>> ++Ashish
>>>>>>
>>>>>>
>>>>>> On Wed, Jan 8, 2014 at 5:04 PM, Ashish Jain <[EMAIL PROTECTED]>wrote:
>>>>>>
>>>>>>> Hello All,
>>>>>>>
>>>>>>> I have a 2 node hadoop cluster running with a replication factor of
>>>>>>> 2. I have a file of size around 1 GB which when copied to HDFS is
>>>>>>> replicated to both the nodes. Seeing the block info I can see the file has
>>>>>>> been subdivided into 8 parts which means it has been subdivided into 8
>>>>>>> blocks each of size 128 MB.  I use this file as input to run the word count
>>>>>>> program. Some how I feel only one node is doing all the work and the code
>>>>>>> is not distributed to other node. How can I make sure code is distributed
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB