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From 陈加俊 <cjjvict...@gmail.com>
Subject Re: I can't get many versions of the specified column,but only get the latest version of the specified column
Date Thu, 24 Feb 2011 03:05:11 GMT
I will check my code and table descriptions again. And the test case
is TestGetRowVersions. I
believe that I made a mistake.

2011/2/24 Ryan Rawson <ryanobjc@gmail.com>

> There are test cases for this, the functionality DOES work, something is
> up...
>
> Without full code and full descriptions of your tables, debugging is
> harder than it needs to be.  It's probably a simple typo or something,
> check your code and table descriptions again. Many people rely on the
> multi version query capabilities and it is very unlikely to be broken
> in a released version of hbase.
>
> On Wed, Feb 23, 2011 at 6:27 PM, 陈加俊 <cjjvictory@gmail.com> wrote:
> >   final List<KeyValue> list = result.list();
> >            for (final KeyValue it : list)
> >            {
> >                System.out.println(Bytes.toString(it.getKey()));
> >                System.out.println(Bytes.toString(it.getValue()));
> >            }
> > I can only get the last version!  why ? Is there any testcase in Hbase?
> >
> > On Thu, Feb 24, 2011 at 9:56 AM, 陈加俊 <cjjvictory@gmail.com> wrote:
> >
> >>  /**
> >>    * Create a sorted list of the KeyValue's in this result.
> >>    *
> >>    * @return The sorted list of KeyValue's.
> >>    */
> >>   public List<KeyValue> list() {
> >>     if(this.kvs == null) {
> >>       readFields();
> >>     }
> >>     return isEmpty()? null: Arrays.asList(sorted());
> >>   }
> >>
> >> I will try it . Thank you very much!
> >>
> >> On Thu, Feb 24, 2011 at 9:45 AM, Buttler, David <buttler1@llnl.gov>
> wrote:
> >>
> >>> Result.list() ?
> >>> Putting the hbase source into your IDE of choice (yay Eclipse!) is
> really
> >>> helpful
> >>>
> >>> Dave
> >>>
> >>>
> >>> -----Original Message-----
> >>> From: 陈加俊 [mailto:cjjvictory@gmail.com]
> >>> Sent: Wednesday, February 23, 2011 5:42 PM
> >>> To: user@hbase.apache.org
> >>> 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 <buttler1@llnl.gov>
> >>> 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:cjjvictory@gmail.com]
> >>> > Sent: Wednesday, February 23, 2011 5:22 PM
> >>> > To: user@hbase.apache.org
> >>> > 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 <stack@duboce.net> 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 <cjjvictory@gmail.com>
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
> >>>
> >>
> >>
> >>
> >> --
> >> Thanks & Best regards
> >> jiajun
> >>
> >>
> >
> >
> > --
> > Thanks & Best regards
> > jiajun
> >
>



-- 
Thanks & Best regards
jiajun

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