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Re: Problem with Rest Java Client
This link was very helpful.

Thank you all guys.

Erman
On 10/12/2012 4:45 PM, Jerry Lam wrote:
> Hi Erman:
>
> I think this post summed up very well about deletion in hbase (
> http://hadoop-hbase.blogspot.ca/2011/12/deletion-in-hbase.html) Please have
> a look.
>
> If you need to delete a specific version of a cell, you can use version
> delete marker as described in the post.
>
> Best Regards,
>
> Jerry
>
> On Tue, Oct 9, 2012 at 1:24 PM, Jean-Marc Spaggiari <[EMAIL PROTECTED]
>> wrote:
>> Hi Erman,
>>
>> It's normal.
>>
>> At t=1 you insert val1
>> At t=2 you insert val2
>> At t=3 you put a marker that row1:farm1:q1 values are deleted.
>>
>> When you try to read the values, HBase will hide all that is before
>> t=3 because of the marker. Which mean you will not see val2 neither
>> you will see val1.
>>
>> I think you can still see them if you read ALL the version for the row.
>>
>> JM
>>
>> 2012/10/9, Erman Pattuk <[EMAIL PROTECTED]>:
>>> Hi,
>>>
>>> I have started using HBase Rest Java client as a part of my project. I
>>> see that it may have a problem with the Delete operation.
>>> For a given Delete object, if you apply deleteColumn(family, qualifier)
>>> on it, all matching qualifiers are deleted instead of the latest
>>> value.
>>>
>>> In order to recreate the problem:
>>>
>>> 1 - Create table tab1, with family fam1.
>>> 2 - Through shell, insert two values, as:
>>>       row1, fam1, q1, val1
>>>       row1, fam1, q1, val2
>>> 3 - Through Rest Java client:
>>>       Delete delItem = new Delete(Bytes.toBytes("row1"));
>>>       delItem.deleteColumn(Bytes.toBytes("fam1"), Bytes.toBytes("q1"));
>>>       table.delete(delItem);
>>> 4 - All q1 values are deleted, instead of the latest q1 value, which is
>>> val2.
>>>
>>> Is that an expected result?
>>>
>>> Thanks,
>>> Erman
>>>