Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Threaded View
HBase >> mail # user >> Reading table sequentially...


Copy link to this message
-
Re: Reading table sequentially...
Sorry.  That was a typo.  In any case, it seems like I am using the wrong
API.

Here's what my table contains:
 ABC_111                     column=info:estimate, timestamp=1263319888463,
value=179.59
 ABC_222                     column=info:estimate, timestamp=1263319888463,
value=191.50
 ABC_333                     column=info:estimate, timestamp=1263319888463,
value=180.65
 ABC_444                     column=info:estimate, timestamp=1263319888463,
value=183.63
 & so on....
I want to retrieve:

ABC_111  179.59
ABC_222  191.50
ABC_333  180.65
ABC_444  183.63
& so on...

What API should I use?  Please let me know.  Thanks for your help.
On Tue, Jan 12, 2010 at 9:36 AM, stack <[EMAIL PROTECTED]> wrote:

> See below:
>
> On Tue, Jan 12, 2010 at 9:12 AM, Something Something <
> [EMAIL PROTECTED]> wrote:
> >
> >            NavigableMap<byte[], NavigableMap<byte[], NavigableMap<Long,
> > byte[]>>> map = result.getMap();
> >
>
> Above returns a map keyed by families:
>
> http://hadoop.apache.org/hbase/docs/current/api/org/apache/hadoop/hbase/client/Result.html#getMap%28%29
>
>
>
>
> >            for (Map.Entry<byte[], NavigableMap<byte[], NavigableMap<Long,
> > byte[]>>> entry : map.entrySet()) {
> >            byte[] key = entry.getKey();
> >
>
> This is family name, not key.
>
>
>
> >            *LOG.info("key = " + Bytes.toString(key));*
> >            NavigableMap<byte[], NavigableMap<Long, byte[]>> value > > entry.getValue();
> >
>
> This is a map keyed by column qualifiers.
>
>
>
> >              for (Entry<byte[], NavigableMap<Long, byte[]>> entry1 :
> > value.entrySet()) {
> >                  byte[] key1 = entry1.getKey();
> >                  *LOG.info("key1 = " + Bytes.toString(key1));*
> >
>
>
> This is the family qualifier.
>
>
>
> >                  NavigableMap<byte[], NavigableMap<Long, byte[]>> value1
> > > entry.getValue();
> >
>
>
> I do not think you intended to do this.  I think you meant entry1, not
> 'entry' and map type should be NavigableMap<Long, byte[]> rather than
> above.
>
> St.Ack
>
>
>
> >                  for (Entry<byte[], NavigableMap<Long, byte[]>> entry2 :
> > value1.entrySet()) {
> >                      String key2 = Bytes.toString(entry2.getKey());
> >                      *LOG.info("key2 = " + key2);*
> >
> >                  }
> >              }
> >            }
> >        }
> >
>
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB