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Error executing job in YARN. Exception Shell$ExitCodeException - Hadoop - [mail # user]
...I'm trying to execute a work in YARN but I get an error. I have checked the yarn-site.xml, the classpath seems to be alright.I read https://issues.apache.org/jira/browse/YARN-1473 as well, b...
   Author: gortiz, 2014-10-15, 11:56
Trying MapReduce with MRUnit and MultipleOutput. - Hadoop - [mail # user]
...I'm trying to test some MapReduces with MRUnit 1.1.0, but I didn't get results.   The code that I execute is:     mapTextDriver.withInput(new LongWritable(1), new Te...
   Author: gortiz, 2014-10-14, 16:00
How to know the number of nodes? - Hadoop - [mail # user]
...I would like to know the number of nodes my cluster has. Is it possible in YARN and MapReduce from Java?I suppose that you have installed a TaskTracker in any node.AVISO CONFIDENCIAL\nEste c...
   Author: gortiz, 2014-10-08, 15:16
How to get the max number of reducers in Yarn - Hadoop - [mail # user]
...I have been working with MapReduce1, (JobTracker and TaskTrakers).Some of my jobs I want to define the number of reduces to the maximum capacity of my cluster.I did it with this:int max = ne...
   Author: gortiz, 2014-10-03, 12:29
[expand - 1 more] - Re: Delete rowKey in hexadecimal array bytes. - HBase - [mail # user]
...I found the error in my code, thanks.On 10/06/14 12:07, gortiz wrote:*Guillermo Ortiz*/Big Data Developer/Telf.: +34 917 680 490Fax: +34 913 833 301C/ Manuel Tovar, 49-53 - 28034 Madrid - Sp...
   Author: gortiz, 2014-06-12, 12:21
[expand - 1 more] - Re: How to decide the next HMaster? - HBase - [mail # user]
...But, it's the first which responses to Zookeeper or which creates the znode? I don't know how it works exactly this process, where could I read more about it?On 08/04/14 18:57, Jean-Daniel C...
   Author: gortiz, 2014-04-23, 15:24
[expand - 6 more] - Re: Lease exception when I execute large scan with filters. - HBase - [mail # user]
...Sorry, I didn't get it why it should read all the timestamps and not just the newest it they're sorted and you didn't specific any timestamp in your filter.On 11/04/14 12:13, Anoop John wrot...
   Author: gortiz, 2014-04-11, 11:06
[expand - 2 more] - Re: BlockCache for large scans. - HBase - [mail # user]
...But, I think there's a direct relation between improving performance in large scan and memory for memstore. Until I understand, memstore just work as cache to write operations.On 09/04/14 23...
   Author: gortiz, 2014-04-10, 06:38
Re: [jira] [Commented] (FLUME-2344) New source for tailing files - Flume - [mail # dev]
...Great, if you have any question about it, let me know.On 12/03/14 19:00, Hari Shreedharan (JIRA) wrote:*Guillermo Ortiz*/Big Data Developer/Telf.: +34 917 680 490Fax: +34 913 833 301C/ Manue...
   Author: gortiz, 2014-03-14, 12:23
[expand - 2 more] - Re: What do people think about the patch FLUME-2321? - Flume - [mail # dev]
...Hi,It's an available patch with this from yesterday, FLUME-2344-0.patch.If I upgrade the version of Java, people with Java6 couldn't use Flume and there's a lot of people with Java6.It could...
   Author: gortiz, 2014-03-12, 07:24
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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