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

Question :

_________ defines the attributes for a column family

1. HBaseAdmin
2. HTableDescriptor
3. Access Mostly Uused Products by 50000+ Subscribers



Correct Answer : Get Lastest Questions and Answer :

Functionality of all the Administrative class as below
HBaseAdmin - main administrative class
HTableDescriptor - contains name of table and its column families
HColumnDescriptor - defines the attributes for a column family





Question :

Which of the following is the functionality of the HBaseAdmin class


1. Create and List tables
2. Delete tables
3. Access Mostly Uused Products by 50000+ Subscribers
4. Shut Down the cluster
5. All of the above



Correct Answer : Get Lastest Questions and Answer :







Question : Select the correct statement from following

1. HBaseAdmin , createTable() method is used to create the table
2. HTableDescriptor used to assign a table name
3. Access Mostly Uused Products by 50000+ Subscribers
4. All 1,2 and 3 are correct
5. Only 3 is correct


Correct Answer : Get Lastest Questions and Answer :

HBaseAdmin creates admin object base upon config instance
createTable() method is used to create the table
HTableDescriptor used to assign a table name
HColumnDescriptor defines each column family
- addFamily method is called once per column family
- Other settings can be specified as well
- E.g., compression options, max version, TTL, etc.

HBaseAdmin admin = new HBaseAdmin(conf);
HTableDescriptor t = new HTableDescriptor("newtable");
HColumnDescriptor fam = new HColumnDescriptor("colfam");
t.addFamily(fam);
admin.createTable(t);

Related Questions

---

Question :

Select the wrong statement about the various commands

1. major_compact : cause a major compaction of a table
2. flush : cause the RegionServers to flush the memstore for a table
3. split : cause a table to split each Region
4. All of the avove are correct


Question :

Which of the following is not a component of HBase Cluster

1. ZooKeeper
2. Master
3. Access Mostly Uused Products by 50000+ Subscribers
4. Region
5. None of the above


Question :

Which describe the best role of ZooKeeper service in HBase Cluster

1. It stores the Stores global information about the cluster
2. Provides synchronization and detects Master node failure
3. Access Mostly Uused Products by 50000+ Subscribers
4. Only 1 and 2 are correct
5. All 1,2 and 3 are correct




Question :

Which of the following statement is true about ROOT Catalog table

1. A table that lists all the regions and their locations
2. A table that lists the location of the .META. table(s)
3. Access Mostly Uused Products by 50000+ Subscribers
4. All of the above are correct


Question :

Select the correct role of the HMaster

1. Responsible for coordinating the slaves (HRegionServers)
2. Assigns regions, detects failures of HRegionServers
3. Access Mostly Uused Products by 50000+ Subscribers
4. All above are correct



Question :

Select the correct statement from the following statement

1. LoadBalancer Periodically reassigns Regions in the cluster
2. CatalogJanitor periodically checks and cleans up the .META. Table
3. Access Mostly Uused Products by 50000+ Subscribers
4. All 1,2 and 3 are correct
5. Only 1 and 2 are correct