Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Threaded View
HBase >> mail # user >> How to use put command in Java for dynamic field name creation


Copy link to this message
-
How to use put command in Java for dynamic field name creation
Hi,

I have a requirement to create dynamic field name (based on value of a
column)  at run time... I think this is the usual approach that we will
used in HBASE for one to many relationships..

For example, physical table has the following structure

  *Branch Number* *Branch Name* *Supported Currency Code* *Currency Name*  1
ABC INR India Rupee  1 ABC USD US Dollar  2 EFG SGD Singapore Dollar  2 EFG
INR India Rupee
Row key is Branch Number...

To flatten it out, we have to redesign the HBASE table as follows :

The fields related to currency will be grouped and created under a single
field (supported currency code & currency name) and the field name is
dynamically created as "CCY"+<actual value for supported currency code>

For the above scenario, the HBASE table will look llike following...
  *Branch Number* *Branch Name* *CCY_INR* *CCY_USD* *CCY_SGD*  1 ABC INR|India
Rupee USD|US Dollar
 2 EFG INR|India Rupee
SGD|Singapore Dollar
Now the question is,

what is the syntax for the put statement in JAVA so that the Column name is
dynamically created...

put ('branch','1','cf1:'+'CCY'+<valueof currency field>,<value of currency
field>+<value of currency name field>);

the above sytax is not working for me...

Please let me know the syntax of the put statement in this scenario using
JAVA...

regards,
Rams
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB