Home | About | Sematext search-lucene.com search-hadoop.com
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
clear query|facets|time Search criteria: .   Results from 31 to 40 from 140 (0.123s).
Loading phrases to help you
refine your search...
[expand - 1 more] - Re: 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
Re: 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: Node_Cluster%29(as ny ut e Namesystem.java:1448) 0) ve Method) mpl...
   Author: Jeff Zhang, 2010-09-10, 01:08
Re: 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] - Re: 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
Re: 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] - Re: 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] - Re: [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
Re: 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
Re: MapReduce Usage in Search Engines - Hadoop - [mail # dev]
...As my understanding, google may use mapred to build index, but won't use mapred in the search phase. Because search phase need to be low latency which is not mapred's feature.   On Fri,...
   Author: Jeff Zhang, 2010-07-30, 14:18
[expand - 1 more] - Re: From X to Hadoop MapReduce - Hadoop - [mail # user]
...Cool, James. I am very interested to contribute to this. I think group by, join and order by can been added to the examples.   On Thu, Jul 22, 2010 at 4:59 AM, James Seigel  wrote:...
   Author: Jeff Zhang, 2010-07-22, 01:22
Sort:
project
Hadoop (138)
Tez (125)
Pig (114)
MapReduce (32)
HDFS (28)
HBase (21)
Hive (16)
YARN (8)
Spark (3)
Avro (2)
Sqoop (2)
Ambari (1)
type
mail # user (120)
mail # general (11)
mail # dev (8)
issue (1)
date
last 7 days (0)
last 30 days (0)
last 90 days (4)
last 6 months (4)
last 9 months (140)
author
Harsh J (571)
Steve Loughran (439)
Owen O'Malley (393)
Todd Lipcon (240)
Allen Wittenauer (225)
Eli Collins (184)
Chris Nauroth (183)
Alejandro Abdelnur (180)
Ted Yu (170)
Arun C Murthy (168)
Tom White (120)
Daryn Sharp (117)
Nigel Daley (115)
Konstantin Shvachko (111)
Colin Patrick McCabe (110)
Doug Cutting (96)
Aaron Kimball (94)
Edward Capriolo (87)
Mark Kerzner (87)
jason hadoop (82)
Kai Zheng (80)
Akira AJISAKA (75)
Hairong Kuang (75)
Benoy Antony (73)
Konstantin Boudnik (73)
Jeff Zhang
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