Where JobTracker stores Task'sinformation

2011-12-14 Thread hadoop anis
Hi Friends, I want to know, where JobTracker stores Task's Information, i.e. which task is being executed on which tasktracker, and how JobTracker stores this information. If anyone know this please let me know it. Regards, Anis M.Tech. Student

Re: Where JobTracker stores Task'sinformation

2011-12-14 Thread hadoop anis
Take a look at JobInProgress.java. There is one object per job. > > Arun > > On Dec 14, 2011, at 1:14 AM, hadoop anis wrote: > > > > > > > > > Hi Friends, > > I want to know, where JobTracker stores Task's Information, > >

Information regarding completed MapTask

2011-12-21 Thread hadoop anis
Hi, I want to know where has information regarding completed MapTask been stored? i.e. how reduce task know about completed map output data is available on which tasktracker? please let me know this. -- Regards, Anis Student MTech (Comp.Sci. & Engg)

Information regarding completed MapTask

2011-12-27 Thread hadoop anis
Friends, I want to know where does information regarding completed MapTask get stored? i.e. how reduce task know about completed map output data is available on which tasktracker? what data structure gets maintained to track for the map output data? If anyone know this please let me know. -- Re

Re: Information regarding completed MapTask

2012-01-04 Thread hadoop anis
Thanks a lot Sir, it worked. On Tue, Dec 27, 2011 at 9:47 PM, Arun C Murthy wrote: > The reduces get it from the JobTracker. Take a look at > TaskCompletionEvents.java. > > Arun > > On Dec 27, 2011, at 1:26 AM, hadoop anis wrote: > > > > Friends, > > I

cleanup of data when restarting Tasktracker of Hadoop

2012-05-24 Thread hadoop anis
Friends, When Tasktracker exits, then data persist on linux filesystem. (I am using Hadoop without HDFS) but when I restart the tasktracker on that node it cleans all data on it's directory. Is this normal behavior and what I have to do to persist that data even

Re: cleanup of data when restarting Tasktracker of Hadoop

2012-05-29 Thread hadoop anis
Hi friends, I am using Hadoop 0.20.2 version. > >In my setup When Tasktracker exits, then data persist on > linux filesystem. (I am using Hadoop without HDFS) > but when I restart the tasktracker on that node it cleans all data on > it's directory. > >

Re: cleanup of data when restarting Tasktracker of Hadoop

2012-05-29 Thread hadoop anis
Thanks for Replying, I am using shared directory to store the data On 5/29/12, Devaraj k wrote: > What is the local directory you are using to store the data? > > Thanks > Devaraj > > ________ > From: hadoop anis [hadoop.a...@gmail