You have one primary HMaster and one standby. Your primary HMaster Falls fails and your client application needs to make a metadata change. Which of the following is the effect on your client application?
Answer(s): A
You have an average key-value pair size of 100 bytes. Your primary access is random needs on the table. Which of the following actions will speed up random reading performance on your cluster?
Answer(s): D
The cells in a given row have versions that range from 1000 to 2000. You execute a delete specifying the value 3000 for the version. What is the outcome?
Answer(s): C
http://archive.cloudera.com/cdh4/cdh/4/hbase/book.html#delete (scroll below and see 5.8.1.5. Delete topic, read the last paragraph)
You have an "Employees" table in HBase. The Row Keys are the employees' IDs. You would like to retrieve all employees who have an employee ID between 'user_100' and 'user_110'. The shell command you would use to complete this is:
Under default settings, which feature of HBase ensures that data won't be lost in the event of a RegionServer failure?
http://tm.durusau.net/?p=27674 (See `From the post' second paragraph)
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