Scan for timestamp > some time

[Tom Nichols <tm...@gmail.com>]

Hi,

I'm interesting in scanning for all columns inserted _after_ a certain
timestamp.  The getScanner methods that take a timestamp return all
columns _before_ that time.  Is there any way for me to accomplish
what I'm trying to do without sending gobs of results over the wire
that I have no interest in?  Is this possible maybe via a
RowFilterInterface impl?

If it's not doable currently, is it a valid feature request?

Thanks in advance.
-Tom

Re: Scan for timestamp > some time

[Tom Nichols <tm...@gmail.com>]

Hi Jonathan,

Thanks for the update.  Here's the feature request.
https://issues.apache.org/jira/browse/HBASE-1182

What's the timeline for the API redesign (HBASE-880)?  If possible, it
would be nice for this to be addressed sooner if that feature is still
a long ways away from a release.

Thanks.
-Tom

On Tue, Feb 3, 2009 at 2:14 PM, Jonathan Gray <jl...@streamy.com> wrote:
> Tom,
>
> This is not currently possible.
>
> The functionality you describe might be included as part of HBASE-880,
> however it could be implemented with a Filter.
>
> Unfortunately it wouldn't be as easy as writing a new Class implementing
> RowFilterInterface because RFI.filterColumn() and RFI.filterRow() do not
> take timestamp.  So you'd need to update RFI as well as the calls to filters
> in the scanner code.
>
> Either way, it is a valid feature request.
>
> JG
>
>> -----Original Message-----
>> From: Tom Nichols [mailto:tmnichols@gmail.com]
>> Sent: Tuesday, February 03, 2009 10:47 AM
>> To: hbase-user@hadoop.apache.org
>> Subject: Scan for timestamp > some time
>>
>> Hi,
>>
>> I'm interesting in scanning for all columns inserted _after_ a certain
>> timestamp.  The getScanner methods that take a timestamp return all
>> columns _before_ that time.  Is there any way for me to accomplish
>> what I'm trying to do without sending gobs of results over the wire
>> that I have no interest in?  Is this possible maybe via a
>> RowFilterInterface impl?
>>
>> If it's not doable currently, is it a valid feature request?
>>
>> Thanks in advance.
>> -Tom
>
>

RE: Scan for timestamp > some time

[Jonathan Gray <jl...@streamy.com>]

Tom,

This is not currently possible.

The functionality you describe might be included as part of HBASE-880,
however it could be implemented with a Filter.

Unfortunately it wouldn't be as easy as writing a new Class implementing
RowFilterInterface because RFI.filterColumn() and RFI.filterRow() do not
take timestamp.  So you'd need to update RFI as well as the calls to filters
in the scanner code.

Either way, it is a valid feature request.

JG

> -----Original Message-----
> From: Tom Nichols [mailto:tmnichols@gmail.com]
> Sent: Tuesday, February 03, 2009 10:47 AM
> To: hbase-user@hadoop.apache.org
> Subject: Scan for timestamp > some time
> 
> Hi,
> 
> I'm interesting in scanning for all columns inserted _after_ a certain
> timestamp.  The getScanner methods that take a timestamp return all
> columns _before_ that time.  Is there any way for me to accomplish
> what I'm trying to do without sending gobs of results over the wire
> that I have no interest in?  Is this possible maybe via a
> RowFilterInterface impl?
> 
> If it's not doable currently, is it a valid feature request?
> 
> Thanks in advance.
> -Tom