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I try to run commands at the terminal but get a connection refused error

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I start my quickstart VM and enter the terminal the following:


sqoop import-all-tables \
-m 1 \
--connect jdbc:mysql://quickstart.cloudera:3306/retail_db \
--username=retail_dba \
--password=cloudera \
--compression-codec=snappy \
--as-avrodatafile \


but get the following error


failed on connection exception: Connection refused; For more details see:
Streaming Command Failed!
Error in mr(map = map, reduce = reduce, combine = combine, in.folder = if (is.list(input)) { :
hadoop streaming failed with error code 5


any help is appreciated. I am just a beginner and I dont know anything thanks. 



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