Chris White

Baltimore, MD

whiteycode.blogspot.com

Age: 32

Software developer mainly working with Java and associated projects: Hadoop, Oozie, Tomcat, JAXRS, Spring, Maven

Apr
3
awarded Nice Answer
Mar
27
awarded apache-pig
Mar
20
awarded Yearling
Mar
8
awarded mapreduce
Mar
2
comment Hadoop-> Mapper->How can we read only Top N rows from each file from given input path?
Does your map class extend Mapper or implement Mapper?
Jan
14
comment Time to complete Map and Reduce Tasks in Hadoop
What's your average map runtime? - the jobhistory.jsp should be able to tell you this
Jan
8
awarded Enlightened
Jan
4
revised How to specify multiple jar files in oozie
updated dead links
Dec
31
answered Various job statistics using yarn and hadoop 2.2.0
Dec
31
comment Found class org.apache.hadoop.mapreduce.TaskInputOutputContext, but interface was expected
Your code works for me, i get an error about unexpected output (to be expected as i don't have your full implementation for T1).
Dec
31
answered Error in overrideing the cleanup method in the mapper using old Hadoop API
Dec
31
answered Time to complete Map and Reduce Tasks in Hadoop
Dec
31
answered Source attachment to Hadoop 1.2.1
Dec
31
answered Write an object into hadoop hdfs issue
Dec
31
answered hadoop: defining map/reduce tasks properties
Dec
31
comment Hadoop 2.2 Add new Datanode to an existing hadoop installation
Does your namenode machine have a firewall preventing the other datanodes from connecting to it? Do your data node logs from the newly added VMs show successful connection to the name node?
Dec
31
answered Hadoop reducer output order when output key is NullWritable
Dec
22
comment Hadoop Reducers: How to ensure the reducers are evenly running over a number of nodes
Yes - identity mapper without a custom partitioner and the same reducer that you are currently using
Dec
20
answered Forcing Hadoop to run the application with multiple reducers
Dec
20
answered Hadoop Number of Reducers Configuration Options Priority
1 2 3 4 5