Result.list() ? Putting the hbase source into your IDE of choice (yay Eclipse!) is really helpful
Dave -----Original Message----- From: 陈加俊 [mailto:[email protected]] Sent: Wednesday, February 23, 2011 5:42 PM To: [email protected] Cc: Buttler, David Subject: Re: I can't get many versions of the specified column,but only get the latest version of the specified column Thank you David ! I alter the table schema as follow: > alter 'cjjIndexPageModify', {NAME => 'log' , VERSIONS => 5 , METHOD => 'add'} How to iterate over KeyValues? which method in Result? On Thu, Feb 24, 2011 at 9:27 AM, Buttler, David <[email protected]> wrote: > What is your table schema set to? By default it holds 3 versions. > Also, you might iterating over KeyValues instead of using the Map since you > don't really care about the organization, just the time. > > Dave > > -----Original Message----- > From: 陈加俊 [mailto:[email protected]] > Sent: Wednesday, February 23, 2011 5:22 PM > To: [email protected] > Cc: Stack > Subject: Re: I can't get many versions of the specified column,but only get > the latest version of the specified column > > I execute it five times at diffrent time. > > //put data by version > > final Put p = new Put(key); // key > final long ts = System.currentTimeMillis(); > p.add(FAMILY, q1, ts,v1); > p.add(FAMILY, q2, ts,v2); > p.add(FAMILY, q3, ts,v3); > table.put(p); > > So I can get five versions ,right? > > On Thu, Feb 24, 2011 at 2:06 AM, Stack <[email protected]> wrote: > > > What do you get for a result? > > > > You are only entering a single version of each column, a single > > version of FAMILY:q1, a single version FAMILY:q2, and a FAMILY:q3. > > > > St.Ack > > > > On Wed, Feb 23, 2011 at 2:54 AM, 陈加俊 <[email protected]> wrote: > > > I can't get many versions of the specified column,but only get the > latest > > > version of the specified column. Is there anyone help me? > > > > > > //put data by version > > > > > > final Put p = new Put(key); // key > > > final long ts = System.currentTimeMillis(); > > > p.add(FAMILY, q1, ts,v1); > > > p.add(FAMILY, q2, ts,v2); > > > p.add(FAMILY, q3, ts,v3); > > > > > > table.put(p); > > > > > > > > > //get all versions of data > > > > > > final Get get = new Get(key); > > > get.addFamily(FAMILY); > > > get.setMaxVersions(10); > > > final Result result = htable.get(get); > > > > > > final NavigableMap<byte[], NavigableMap<byte[], > > > NavigableMap<Long, byte[]>>> map = result.getMap(); > > > final Set<Entry<byte[], NavigableMap<byte[], > > > NavigableMap<Long, byte[]>>>> entrySet = map.entrySet(); > > > final Iterator<Entry<byte[], NavigableMap<byte[], > > > NavigableMap<Long, byte[]>>>> iterator = entrySet > > > .iterator(); > > > while (iterator.hasNext()) > > > { > > > final Entry<byte[], NavigableMap<byte[], > > > NavigableMap<Long, byte[]>>> next = iterator.next(); > > > System.out.println(Bytes.toString(next.getKey())); > //family > > > for (final Entry<byte[], NavigableMap<Long, byte[]>> > > > item : next.getValue().entrySet()) > > > { > > > System.out.println(Bytes.toString(item.getKey())); > > > for (final Entry<Long, byte[]> _item : > > > item.getValue().entrySet()) > > > { > > > System.out.println(_item.getKey()); //q > > > > > System.out.println(Bytes.toString(_item.getValue())); > > > //value > > > } > > > } > > > > > > } > > > > > > -- > > > Thanks & Best regards > > > jiajun > > > > > > > > > -- > Thanks & Best regards > jiajun > -- Thanks & Best regards jiajun
