Hadoop file distribution

[Null Ecksor <nu...@gmail.com>]

Hey guys,

I am new user of hadoop.
I am writing a mapreduce query on a relatively huge file (3 Gb). First I had
a single node hadoop installed which took approx 200 seconds.
Now I installed hadoop cluster on 10 machines and tried to use the same
query. It took nearly 230 seconds this time.

The query Im using to insert data into hdfs is -

hadoop dfs -put *.dat /data/

How to check weather the file is distributed among the 10 machines? And how
to distribute the file amongst the datanodes to make it faster?

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