How to keep HDFS cluster balanced?
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What is the function of ApplicationMaster?
Why do we use HDFS for applications having large data sets and not when there are lot of small files?
Explain Erasure Coding in Apache Hadoop?
What is Derby database?
What alternate way does HDFS provides to recover data in case a Namenode
What are the port numbers of namenode, job tracker and task tracker?
What are the default configuration files that are used in hadoop?
What is a speculative execution in Apache Hadoop MapReduce?
Can we do online transactions(oltp) using hadoop?
On What concept the Hadoop framework works?
Which one is default InputFormat in Hadoop ?
What are the functionalities of jobtracker?