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[expand - 3 more] - Re: Spark SQL weird exception after upgrading from 1.1.1 to 1.2.x - Spark - [mail # user]
...Hey Cheng, thank you so much for your suggestion, the problem was actuallya column/field called "timestamp" in one of the case classes!! Once Ichanged its name everything worked out fine aga...
   Author: Roberto Coluccio, 2015-03-18, 16:11
Spark UI port issue when deploying Spark driver on YARN in yarn-cluster mode on EMR - Spark - [mail # user]
...Hello folks,I'm trying to deploy a Spark driver on Amazon EMR in yarn-cluster modeexpecting to be able to access the Spark UI from the :4040address (default port). The problem here is that t...
   Author: Roberto Coluccio, 2014-12-23, 16:06
DStream.print cost/overhead - Storm - [mail # user]
...Hello everyone,I wasn't able to find any detailed reference about the *DStream.print*operation "cost" in terms of computation, network, storage, and more.Having a (soft) real time Spark Stre...
   Author: Roberto Coluccio, 2014-10-27, 19:03
Access resources from jar-local resources folder - Spark - [mail # user]
...Hello folks,I have a Spark Streaming application built with Maven (as jar) and deployedwith the spark-submit script. The application project has the following(main) structure:myAppsrcmainsca...
   Author: Roberto Coluccio, 2014-09-23, 08:10
Querying arrays of structs with regular expressions or like/rlike functions - Hive - [mail # user]
...Hello folks,I am performing some tests with Hive 0.12.0 (cdh5.0.3). I have a quitecomplex data model, in particular I modeled a filed in my table as an arrayof structs, like:people array<...
   Author: Roberto Coluccio, 2014-07-22, 10:05
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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