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Elastic MapReduce and Public IP address (as opposed to internal ones) - MapReduce - [mail # dev]
...Hello,I've started an EMR cluster (Elastic MapReduce). Is the an way to fixthe following problem (which i guess has been asked before).In this scenario I'm not using a socks proxy (it all wo...
   Author: Saptarshi Guha, 2015-03-31, 02:36
Single JVM, many tasks: How do I know when I'm on the last map task - MapReduce - [mail # user]
...Hello,  In my Java Hadoop job, i have reset the reuse variable to be -1. hence a JVM will process multiple tasks.  I have also seen to it that instead of writing to the job context...
   Author: Saptarshi Guha, 2013-02-22, 20:17
How to get conf xml file for a completed job - MapReduce - [mail # user]
...Hello,  I tried retreiving the conf xml file for  a completed job via  runningjob.getJobFile()  This a returns a URI to a an xml file whose path is identical to the link ...
   Author: Saptarshi Guha, 2013-01-22, 20:26
Reading SequenceFiles throws Wrong key class r - MapReduce - [mail # user]
...Hello,  Sorry for the vague subject ....  I am writing some code using CDH 0.20.2-cdh3u4 to read RHBytesWritable from a file(F) on the HDFS.  (1) The key/values present in F a...
   Author: Saptarshi Guha, 2012-11-06, 04:12
API Design: getClusterMetrics - MapReduce - [mail # dev]
...Hello (sorry for cross post) I am reading the DistributedShell code and came across   GetClusterMetricsRequest clusterMetricsReq  Records.newRecord(GetClusterMetricsRequest.class);...
   Author: Saptarshi Guha, 2012-10-10, 04:11
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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