In hadoop,what is the difference and relationship between jobtracker tasktracker?

2017-10-11T17:02:31

as the title says,In hadoop,what is the difference and relationship between jobtracker tasktracker? Can someone explain to me ,thanks for your kind help!

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Author:「python_sre」,Reproduced under the CC 4.0 BY-SA copyright license with link to original source & disclaimer.
Link to:https://stackoverflow.com/questions/46684091/in-hadoop-what-is-the-difference-and-relationship-between-jobtracker-tasktracker

About “In hadoop,what is the difference and relationship between jobtracker tasktracker?” questions

as the title says,In hadoop,what is the difference and relationship between jobtracker tasktracker? Can someone explain to me ,thanks for your kind help!
i have successfully installed ubuntu 12.04 and hadoop 2.3.0. after entering the jps command i find the output as below 4135 jps 2582 SeconadaryNameNode 3143 NodeManager 2394 Namenode 2391 Datanod...
I'm running a hadoop cluster (version 0.20.205), and I have to periodically deploy new code to the cluster, which involves taking the cluster down and bringing it back up again with the new code. My
I am able to start the namenode and secondary namenode but I am not able to start jobtracker and tasktracker. When I check log it shows something like this ***************************************...
I use CDH5.4, I want to start the JobTracker and TaskTracker with this command sudo service hadoop-0.20-mapreduce-jobtracker start and sudo service hadoop-0.20-mapreduce-tasktracker start, I got this
I Installed Hadoop 2.4.X. As expected there is no JobTracker and TaskTracker. Its Yarn based. Is there any way to make it use old JobTracker and TaskTracker for MapReduce and not based on Yarn ? In
I am trying to collect various metrics for active tasttrackers but it throws an exception Not sure why? for(String s: jc.getClusterStatus(true).getActiveTrackerNames()){ System.out.prin...
when i give the command for service in /etc/init.d/hadoop* >do >sudo $service stop >done its stops all the service and when i give for service in /etc/init.d/hadoop-hdfs-* >do
I have set up a pseudo-distributed Hadoop cluster (with jobtracker, a tasktracker, and namenode all on the same box) per tutorial instructions and it's working fine. I am now trying to add in a sec...
I had Hadoop 3 node cluster which works perfectly. Next day the namenode and jobtracker stops working and the datanode and tasktracker working continuously . After starting the hadoop it works for ...

Copyright License:Reproduced under the CC 4.0 BY-SA copyright license with link to original source & disclaimer.