Just to follow up, this appears to be a bug. I've created a JIRA. https://issues.apache.org/jira/browse/HBASE-3550
On Fri, Feb 18, 2011 at 10:57 AM, Bill Graham <[email protected]> wrote: > Hi, > > I'm unable to get ColumnPrefixFilter working when I use it in a > FilterList and I'm wondering if this is a bug or a mis-usage on my > part. If I set ColumnPrefixFilter directly on the Scan object all > works fine. The following code shows an example of scanning a table > with a column descriptor 'info:last_name' where we only want rows > where that column exists. Approach #1 below doesn't filter, but #2 > does. I'm using the latest 0.90.1 snapshot (0.90.1-20110215.213202-4). > > HTable table = new HTable("SampleTable"); > Scan s = new Scan(); > > byte[] colPrefix = Bytes.toBytes("last_"); > Filter prefixFilter = new ColumnPrefixFilter(colPrefix); > > // Approach 1: the following 3 lines do not filter > FilterList filterList = new FilterList(); > filterList.addFilter(prefixFilter); > s.setFilter(filterList); > > // Approach #2: if I instead use this, filtering is fine > //s.setFilter(prefixFilter); > > ResultScanner scanner = table.getScanner(s); > > > thanks, > Bill >
