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From Rajeshkumar J <rajeshkumarit8...@gmail.com>
Subject Re: Iteration in ResultScanner
Date Thu, 21 Jan 2016 11:46:14 GMT
Hi gokul,

   As you said I have used result.rawCells() but there is no functions to
get all the columns of the given row-key.

Thanks

On Wed, Jan 20, 2016 at 12:23 PM, Gokul Balakrishnan <royalgok@gmail.com>
wrote:

> Yes. You can use result.rawCells() to get the array of Cell instances
> backing your query, if you need to retrieve all columns in your row at
> once. You can then retrieve column values in the same way as above from
> each Cell instance.
>
> Alternatively, if your requirement is to process each column one by one,
> you can use result.cellScanner() to get a CellScanner instance (say
> "cellScanner"), and then iterate over each cell through
> cellScanner.current().
>
> Please see [1] for all operations supported by
> org.apache.hadoop.hbase.client.Result.
>
> [1]
> https://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/Result.html
>
> On 20 January 2016 at 12:02, Rajeshkumar J <rajeshkumarit8292@gmail.com>
> wrote:
>
> > Hi,
> >
> >  I want to get all the column values for a given row-key.
> >
> > Row-key     col1     col2 col3 col4 col5
> >
> > id100          XXX    YY    ZZZ   AAA   BBB
> >
> > is there any option available to get all the column values for given
> > row-key. Here for id100 I want to have XX,YY, ZZZ ,AAA,BBB
> >
> > Thanks
> >
> >
> >
> > On Wed, Jan 20, 2016 at 11:30 AM, Gokul Balakrishnan <royalgok@gmail.com
> >
> > wrote:
> >
> > > There are various ways, one of which is as follows:
> > >
> > > Result result = table.get(new Get("id100".**getBytes()));
> > > Cell dataCell
> > > = result.getColumnLatestCell("some_column_family","some_qualifier");
> > > byte[] data = CellUtil.cloneValue(dataCell);
> > >
> > > The byte array "data" will represent the value of the column you've
> > > retrieved. Note that this code returns the latest version of the cell
> > > you've specified, and you'll have to do the necessary null checks for
> > > "dataCell".
> > >
> > > On 20 January 2016 at 11:09, Rajeshkumar J <
> rajeshkumarit8292@gmail.com>
> > > wrote:
> > >
> > > > Hi solomon,
> > > >
> > > >    The statement you have given is of
> > > org.apache.hadoop.hbase.client.Result
> > > > type. How to get all the column values from this??
> > > >
> > > > Thanks
> > > >
> > > > On Tue, Jan 19, 2016 at 6:45 PM, Solomon Duskis <sduskis@gmail.com>
> > > wrote:
> > > >
> > > > > It sounds like you want a Get rathe than a scan.  *table.get(new
> > > > > Get("id100".**getBytes()));* should do the trick.
> > > > >
> > > > > On Tue, Jan 19, 2016 at 7:17 AM, Rajeshkumar J <
> > > > > rajeshkumarit8292@gmail.com>
> > > > > wrote:
> > > > >
> > > > > > Hi,
> > > > > >
> > > > > >  I have implemented Range scan using Java API as shown below
> > > > > >
> > > > > >             Scan scan = new Scan();
> > > > > >             Configuration config = HBaseConfiguration.create();
> > > > > >             HTable table = new HTable(config, "tablename");
> > > > > >             scan.setStartRow("id100".getBytes());
> > > > > >             scan.setStopRow("id100".getBytes());
> > > > > >             ResultScanner scanner = table.getScanner(scan);
> > > > > >
> > > > > > Is there any option like so that i can get all the column values
> > only
> > > > > for a
> > > > > > particular row-key without iteration.
> > > > > >
> > > > > > For ex : I have used id100 which is a row-key. After the scan
> > > completed
> > > > > how
> > > > > > to get all the column values  of id100 row key without iteration.
> > > > > >
> > > > > > Thanks,
> > > > > > Rajeshkumar J
> > > > > >
> > > > >
> > > >
> > >
> >
>

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