Cloudera HBase Certification Questions and Answers (Dumps and Practice Questions)

Question : Select the correct wrong statement for RegionSplit..

1. HBase create two "daughter" reference files
2. Daughter files only contain the key where region was split
3. Access Mostly Uused Products by 50000+ Subscribers
4. Small reference files and original region are removed
5. All are correct

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Question :

Select statement which is wrong for HFile

1. HFile are the actual HBase data storage files
2. Consists of Data, Meta, FileInfo, Trailer and Index blocks
3. Access Mostly Uused Products by 50000+ Subscribers
4. Smaller blocks faster for random access and faster for create
5. none of the above




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HFile are the actual HBase data storage files
Consists of Data, Meta, FileInfo, Trailer and Index blocks
- Data and Meta blocks are optional
- FileInfo and Trailer blocks are fixed
- Trailer has pointers to the other blocks
- Index block records the offsets of the Data and Meta block
Block size is configured by hfile.min.blocksize.size
- Smaller blocks faster for random access but slower for create
- Larger blocks faster for primarily sequential access
- Default size is 64KB





Question :

Select the option which is applicable to schema creation

1. Schemas can be created or updated in the shell or with HBaseAdmin Java API
2. Column may be added on the fly
3. Access Mostly Uused Products by 50000+ Subscribers
4. All are correct


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Related Questions

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Question : Which statement is true about the HBase

1. Sparse
2. MultiDimensional
3. Persistent
4. SortedMap
5. All of the Above


Question : HBase is a Sorted Distributed Map ?

1. True
2. False



Question : HBase is a Map at its core, and which statement is considered true for this Map..
1. The Map is indexed by a row key, Clolumn Key, and a timestamp.
2. Each value in the map is an uninterpreted array of bytes.
3. The Map is not Indexed at all.

1. Only 1 is correct
2. Only 2 is correct
3. Only 1 and 2 is correct
4. All 1,2 and 3 are correct




Question : How HBase Maps are Sorted

1. Key or Values are kept in lexicographic sorted order
2. HBase Keys and Values are stored in Random Order
3. Keys and Values are not sorted at all




Question : Select the correct option for the HBase ..

1. HBase is Built upon a distributed filesystem.
2. A given row can have any number of columns
3. There could be a Gap between keys
4. All of the above




Question :

In HBase data is not updated ?

1. True
2. False