The "API usage example" on the Getting Started page in the HBase documentation provides an example of how to use the scanner:
Scanner Scanner = table.getScanner (new String [] {"myColumnFamily: columnQualifier1"});
RowResult rowResult = scanner.next();
while (rowResult != null) {
//...
rowResult = scanner.next();
}
As I understand it, this code will be executed on one computer (node name), and all scanning and filtering operations will not be distributed. Only data storage and data loading will be distributed. How to use a distributed scanner that will work separately on each node.
What is the best practice for fast data filtering? Thanks.
chardex
source
share