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[HADOOP-6957] Return bindAdrress directly rather than get it from ServerSocketChannel in Listener's getAddress() method - Hadoop - [issue]
...I am trying to make Pseudo-Distributed hadoop can been accessed by outside, I change the fs.default.name to 0.0.0.0.:9000 , but still failed. Finally I found that the problem is caused by th...
http://issues.apache.org/jira/browse/HADOOP-6957    Author: Jeff Zhang , 2010-09-18, 12:37
Number of Mappers - Hadoop - [mail # general]
...Hi Rahul,  You can not determined set the mapper number as reducer number. The mapper number is determined by the your InputFormat. If you are using PigStorage, then the InputFormat is ...
   Author: Jeff Zhang , 2010-09-15, 01:22
[expand - 1 more] - changing SequenceFile format - Hadoop - [mail # user]
...The next method has three version for three type of sequence file: non-compression, record compression and block compression) I think maybe you should write a new class for your data format ...
   Author: Jeff Zhang , 2010-09-13, 12:41
Problem in copyFromLocal - Hadoop - [mail # user]
...check the data node's log to see whether it starts correctly   On Thu, Sep 9, 2010 at 8:51 AM, Medha Atre  wrote: > Sorry for the typo in the earlier message: > -------------...
   Author: Jeff Zhang , 2010-09-10, 01:08
How to disable secondary node - Hadoop - [mail # user]
...then, do not start secondary namenode (  comment the last line of start-dfs.sh  #  "$bin"/hadoop-daemons.sh --config $HADOOP_CONF_DIR --hosts masters start secondarynamenode )...
   Author: Jeff Zhang , 2010-09-09, 07:08
[expand - 3 more] - How to rebuild Hadoop ?? - Hadoop - [mail # user]
...Matthew,  InputFormat will been used in client side, so you should combine the hadoop-0.20.2.jar and hadoop-example.jar into one single jar    On Wed, Sep 8, 2010 at 2:58 AM, ...
   Author: Jeff Zhang , 2010-09-08, 10:27
change HDFS block size - Hadoop - [mail # user]
...Those lagacy files won't change block size (NameNode have the mapping between block and file) only the new added files will have the block size of 128m    On Tue, Sep 7, 2010 at 7:...
   Author: Jeff Zhang , 2010-09-08, 03:03
[expand - 1 more] - where distributed cache start working - Hadoop - [mail # dev]
...Do you debug it using LocalJobRunner ? In local mode, TaskRunner won't been called. In local mode, mapper task runs in thread rather than forked jvm. The TaskRunner only been called in distr...
   Author: Jeff Zhang , 2010-08-23, 04:47
[expand - 1 more] - [Input split] File manipulation - Hadoop - [mail # user]
...The default split size is 64M which is the block size, and you can change it by configuration. What file type of your input file ? if it's gz , it can not been spited, and you will always ge...
   Author: Jeff Zhang , 2010-08-18, 01:37
hadoop RPC Server and Client - Hadoop - [mail # user]
...There's heartbeat between jobtracker and tasktracker, namenode and datanode. Besides, tasktracker will report task progress info to jobtracker, and datanode will report block report to namen...
   Author: Jeff Zhang , 2010-08-13, 01:21