Where is hadoop-env.sh file present?
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Where are Hadoop’s configuration files located?
Explain what is speculative execution?
What are configuration files in Hadoop?
Clarify what a task tracker is in hadoop?
If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
Doesn’t google have its very own version of dfs?
How can one write custom record reader?
Is nosql follow relational db model?
Name the files which are used by the startup and shutdown commands?
What is the use of context object?
Explain some important features of hadoop?
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