I recently had to do something similar both programmatically in a unit
test and from the hbase shell. I'm not using an index, but this is
probably similar to what you're doing:
HTableDescriptor table = new HTableDescriptor("tableName");
HColumnDescriptor column = new HColumnDescriptor("columnFamily");
column.setMaxVersions(1); // Limits versions to 1
table.addFamily(column);
HBaseAdmin hBaseAdmin = new HBaseAdmin(...);
hBaseAdmin.createTable(table);
>From the hbase shell:
create 'tableName', {NAME=>'columnFamily', VERSIONS=>1}
Hope this helps.
-James
On Wed, 2010-01-27 at 19:24 -0600, [email protected] wrote:
> Hi,
>
> Following code is I got used to create table with index.
> Now, I think it's no need for us to keep multiple version of data.
> How can I set my hbase table only to keep one version of data?
> Better to give me some codes that I can add to my following function.
> Thanks
>
> public void createTableWithIdx(String tablename,String
> columnfamily,String idx_columnfamily,String idx_column) throws IOException
> {
> HTableDescriptor desc = new HTableDescriptor(tablename);
> String[] temp;
> String delimiter = ",";
> temp = columnfamily.split(delimiter);
> for(int i =0; i < temp.length ; i++){
> desc.addFamily(new HColumnDescriptor(temp[i]));
> }
> IndexedTableDescriptor idx_desc = new IndexedTableDescriptor(desc);
> idx_desc.addIndex(new IndexSpecification(idx_column,
> Bytes.toBytes(idx_columnfamily+":"+idx_column)));
> IndexedTableAdmin admin = null;
> admin = new IndexedTableAdmin(config);
> admin.createIndexedTable(idx_desc);
> System.out.println(tablename+" "+" create table and index
> successfully");
> }
>
>
>
>
> Fleming Chiu(邱宏明)
> 707-6128
> [email protected]
> 週一無肉日吃素救地球(Meat Free Monday Taiwan)
>
>
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