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
