I went ahead and submitted a patch that works better than what I showed in my previous email.
https://issues.apache.org/jira/browse/HBASE-11990 On Tue, Sep 16, 2014 at 10:16 AM, Niels Basjes <[email protected]> wrote: > Hi, > > I found that in several scenarios where I use HBase I need to scan for a > specific rowkey prefix. > (The prefix filter is too inefficient in my scenarios because it scans all > rows and filters them) > > The way I do that is by using the scan.setStartRow and the scan.setStopRow > But because these stoprow must be 'one bigger' I created a utility method > for my own projects looks like this: > > private void scanForPrefix(Scan scan, byte[] prefix) { > // Start the scan with the exact prefix > scan.setStartRow(prefix); > > // Stop at the end of this prefix (= this prefix +1) > byte[] endOfScan = prefix.clone(); > endOfScan[endOfScan.length-1]++; > scan.setStopRow(endOfScan); > } > > Would it make sense to add this method the Scan class so you can simply say > > scan.setRowKeyPrefix(prefix) > > I you think this would make sense then I'll create a Jira ticket and > submit a patch. > > -- > Best regards > > Niels Basjes > -- Best regards / Met vriendelijke groeten, Niels Basjes
