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HBase Interview Questions and Answers
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Questions
HBase
0
votes
Q: What is compaction in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-compaction
0
votes
Q: What are the different compaction types in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-compaction-types
+1
vote
Q: What is the difference between the commands delete column and delete family in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#famili-commands-hbase
#hbase-delete-commands
0
votes
Q: What is a cell in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-cell
#cell-hbase
0
votes
Q: What is the role of the class HColumnDescriptor in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-hcolumndescriptor-class
#hbase-class
0
votes
Q: What is the lower bound of versions in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-lower-bound
+1
vote
Q: What is TTL (Time to live) in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-ttl
#hbase-time-to-live
0
votes
Q: Does Hbase support table joins in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-joins
#hbase-join-table
0
votes
Q: What is a rowkey in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-rowkey
#rowkey-hbase
0
votes
Q: What are the two ways in which you can access data from Hbase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-data-access
0
votes
Q: What are the two types of table design approach in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-table-design
#hbase-design
0
votes
Q: In which scenario should we consider creating a short and wide Hbase table?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-creating-table
0
votes
Q: In Which scenario should we consider a Tall-thin table design in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-table-design
0
votes
Q: Give a command to store 4 versions in a table rather than the default 3.
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-4-version
0
votes
Q: What does the following command do in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-table-alter
+2
votes
Q: Give the commands to add a new column family “(newcolfamily”) to a table (“tablename”) which has a existing column family(“oldcolfamily”).
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-commands
#hbase-column-family
0
votes
Q: What is the Hbase shell command to only 10 records form a tablein HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-shell-commands
0
votes
Q: How does Hbase support Bulk data loading in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-bulk-data-loading
0
votes
Q: How does Hbase provide high availability in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-high-availability
0
votes
Q: what is HMaster in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-hmaster
0
votes
Q: What is HRegionServer in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-hregionserver
#hregionserver
#hregionserver-hbase
0
votes
Q: What are the different Block Caches in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-block-coaches
#block-coach-hbase
0
votes
Q: How does WAL help when a RegionServer crashes in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-wal
#hbase-regionserver
0
votes
Q: Why MultiWAL is needed in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-multiwal
0
votes
Q: In Hbase what is log splitting in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-log-splitting
0
votes
Q: How can you disable WAL in HBase? What is the benefit in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-wal
#wal-hbase
0
votes
Q: When do we do manual Region splitting in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-manual-region
0
votes
Q: What is a Hbase Store in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-store
0
votes
Q: Which file in Hbase is designed after the SSTable file of BigTable in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-sstable
0
votes
Q: Why do we pre-create empty regions in HBase?
answered
Jun 13, 2020
in
HBase
by
SakshiSharma
#hbase-pre-create
#pre-ccreate-hbase
#hbase-region
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