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Re: Hadoop 2.2.0 from source configuration - MapReduce - [mail # user]
...Could you please send me a link to the documentation that you followed to setup your single-node cluster? I will go through it and do it step by step, so hopefully at the end your issue will...
   Author: Adam Kawa, 2013-12-03, 23:51
[expand - 1 more] - Re: Any reference for upgrade hadoop from 1.x to 2.2 - MapReduce - [mail # user]
...@Nirmal,  And later, you need to make a decision to finalize the upgrade or rollback.   2013/12/3 Adam Kawa  ...
   Author: Adam Kawa, 2013-12-03, 18:28
Re: Unable to use third party jar - MapReduce - [mail # user]
...Could you please try:  $ export HADOOP_CLASSPATH="$HADOOP_CLASSPATH:json-simple-1.1.1.jar" $ hadoop jar domain_gold.jar org.select.Driver -libjars json-simple-1.1.1.jar  $INPUT1 $I...
   Author: Adam Kawa, 2013-12-02, 22:11
[MAPREDUCE-5660] Log info about possible thrashing (when using memory-based scheduling in Capacity Scheduler) is not printed - MapReduce - [issue]
...There is a tiny, but confusing when troubleshooting, bug in TaskTracker code:if (totalMemoryAllottedForTasks > totalPhysicalMemoryOnTT) {  LOG.info("totalMemoryAllottedForTasks ...
http://issues.apache.org/jira/browse/MAPREDUCE-5660    Author: Adam Kawa, 2013-12-01, 22:52
Re: Can't get a streaming job to use a custom partitioner - MapReduce - [mail # user]
...1) Could you print the output of: $ jar tf ./NumericPartitioner.jar  2) Could you try: $ export HADOOP_CLASSPATH="$HADOOP_CLASSPATH:./NumericPartitioner.jar"  $ ../bin/hadoop jar ....
   Author: Adam Kawa, 2013-11-30, 23:32
Re: MultipleInputs.addInputPath - MapReduce - [mail # user]
...Can not you specify such a file to process as Path in MultipleInputs.addInputPath?  1) MultipleInputs.addInputPath(job, new Path(args[0] + "/part-00000"), TextInputFormat.class, Data1.c...
   Author: Adam Kawa, 2013-11-30, 23:22
Re: Missing records from HDFS - MapReduce - [mail # user]
...You can find an example/inspiration in the *initialize(InputSplit genericSplit, TaskAttemptContext context)* method in the *org.apache.hadoop.mapreduce.lib.input.LineRecordReader*   201...
   Author: Adam Kawa, 2013-11-28, 23:15
Re: Relationship between heap sizes and mapred.child.java.opt configuration - MapReduce - [mail # user]
...TaskTrackers and DataNodes are long-living daemons (written in Java) running on slave nodes in separate JVMs. I usually give at least 1GB to each of them in production clusters.    ...
   Author: Adam Kawa, 2013-11-28, 22:54
Re: About Hadoop - MapReduce - [mail # user]
...MapReduce is best optimized for HDFS, but you can run MapReduce jobs over data stored in other file-systems e.g. local file system (e.g. ext3, ext4, xfs), S3, CloudStore (formerly Kosmos) to...
   Author: Adam Kawa, 2013-11-28, 22:42
Re: Heterogeneous Cluster - MapReduce - [mail # user]
...cross OS."  I heard that some companies deployed Hadoop cluster, where RHEL is installed on masters (to get a support), and CentOs is installed on slaves. If it is true, then it shows t...
   Author: Adam Kawa, 2013-11-28, 22:39
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