Clarify what a task tracker is in hadoop?
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Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?
What is difference between reducer and combiner?
Doesn’t google have its very own version of dfs?
What are the different commands used to startup and shutdown Hadoop daemons?
List out the some common problems faced by data analyst?
What are the different modes in which we can configure/install Hadoop?
What happen on the namenode when a client tries to read a data file?
What does rack awareness mean?
What is the role of the secondary namenode?
Give a brief overview of Hadoop history?
If DataNode increases, then do we need to upgrade NameNode in Hadoop?
What webdav is in hadoop?
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