Hello, The link posted by the moderator will be helpful, particularly Common Issue #1. Also, see the reply to this Community post: virtual machine won't play   ... View more

I tested your command in the Cloudera Quickstart VM running the same version as you are (CDH 5.4.2). I am using the VMWare version of the VM. Your command worked just fine (underscores are not a problem).    Here are the commands I issued, try them and see if they work: [cloudera@quickstart hive]$ sudo -u hdfs hadoop fs -ls /user/hive/warehouse                                          -- verfiy dir does not exist [cloudera@quickstart hive]$ sudo -u hdfs hadoop fs -mkdir /user/hive/warehouse/original_access_logs   -- create dir [cloudera@quickstart hive]$ sudo -u hdfs hadoop fs -ls /user/hive/warehouse                                           -- verify dir exists Found 1 items drwxr-xr-x - hdfs hive 0 2015-10-05 06:46 /user/hive/warehouse/original_access_logs [cloudera@quickstart hive]$ sudo -u hdfs hadoop fs -mkdir /user/hive/warehouse/original_access_logs   -- create dir fails mkdir: `/user/hive/warehouse/original_access_logs': File exists [cloudera@quickstart hive]$ sudo -u hdfs hadoop fs -rmdir /user/hive/warehouse/original_access_logs    -- delete dir [cloudera@quickstart hive]$ sudo -u hdfs hadoop fs -ls /user/hive/warehouse                                           -- verify dir does not exist [cloudera@quickstart hive]$ sudo -u hdfs hadoop fs -mkdir /user/hive/warehouse/original_access_logs    -- try creating dir again [cloudera@quickstart hive]$ sudo -u hdfs hadoop fs -ls /user/hive/warehouse                                            -- verify dir was created Found 1 items drwxr-xr-x - hdfs hive 0 2015-10-05 06:47 /user/hive/warehouse/original_access_logs   (Note: It is best to switch from using 'hadoop fs ... ' commands to 'hdfs dfs ... ' commands as only the latter will be supported in the future.)     ... View more

Here is the data sheet for your processor - it has VT-X support but it may need to be enabled: http://ark.intel.com/products/85214/Intel-Core-i7-5500U-Processor-4M-Cache-up-to-3_00-GHz   When I reboot my Windows machine, there is a prompt to enter the BIOS or Setup menu - I have to press F10 within a few seconds of the prompt and then a menu appears. Look for the VT or Virtualization option. In some cases it can be found by navigating through the menus as follows:  Security > OS Security > Intel Virtualization Technology   Try to reboot your machine and see if such a prompt appears. If not, there will be another way to do it, will have to read up. There are lots of youtube videos and posts on this topic, e.g.:  http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1003944 and https://www.youtube.com/watch?v=CbthSKoVF-U   ... View more