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Date: Fri, 9 Aug 2013 12:50:20 -0700
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 <CALte62zyvfjeWJYvb48jkqwJ5s21DKf2bW1usX_U5Zvh0OT41A@mail.gmail.com>
Subject: Re: Hadoop-HBase table hierarchical column scan
From: Ted Yu <yuzhihong@gmail.com>
To: user@hbase.apache.org
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I think you need to place 'source' and 'name' as separate columns in 'DFLT'

Cheers

On Fri, Aug 9, 2013 at 12:44 PM, Narlin M <hpnole@gmail.com> wrote:

> I am fairly new to the hadoop-hbase environment having started working on
> it very recently, so I hope I am wording the question correctly.
>
> I am trying to read data from a hadoop-hbase table which has only one
> column family named 'DFLT'. This family contains hierarchical column
> qualifiers "/source:int64/name:string". I want to read the name column for
> a particular source value, say 10. How can I achieve this using the Scan
> class?
>
> I tried setting up the scan object as follows:
>
> ...
>
> byte[] family = Bytes.toBytes("DFLT");
> byte[] qualifier = Bytes.toBytes("source:name");
>
> Scan scan = new Scan();
> scan.addColumn(family, qualifier);
>
> FilterList list = new FilterList(FilterList.Operator.MUST_PASS_ALL);
>
> SingleColumnValueFilter filter = new SingleColumnValueFilter(family,
> Bytes.toBytes("source"), CompareFilter.CompareOp.EQUAL,Bytes.toBytes(10));
>
> list.addFilter(filter);
>
> scan.setFilter(list);
>
> ...
>
>
> But I do not get any data back with this setup. I am guessing that I am not
> setting up the hierarchical qualifiers correctly. Any and all pointers will
> be appreciated.
>
> Thanks, Narlin M.
>

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