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From Ching-Cheng Chen <cc...@evidentsoftware.com>
Subject Re: Is it possible to get list of row keys?
Date Wed, 02 Mar 2011 13:45:58 GMT
Stable order mean the keys will return in some kind of ordering (not
alphanumeric, not numeric,), just in certain order.

For example, if you use setKeys("","") as first batch call and you got
following result.

keyabc
key456
keydsg
key8jkg
keyag87
key45s
...

Then if you call with setKeys("keydsg","") again, you will get following
result.

keydsg
key8jkg
keyag87
key45s
...

Regards,

Chen

www.evidentsoftware.com

On Wed, Mar 2, 2011 at 4:53 AM, Eric Charles <eric.charles@u-mangate.com>wrote:

> Hi,
>
> I'm also facing the need to retrieve all row keys.
>
> What do you mean with "stable" order?
> From this thread, I understand paging method with RandomPartitioner will
> return all keys (shuffled, but missing key, no double key).
> This seems to have already told, but I prefer to double-check...
>
> Tks,
> - Eric
>
>
>
> On 23/02/2011 15:24, Daniel Lundin wrote:
>
>> They are, however, in *stable* order, which is important.
>>
>> On Wed, Feb 23, 2011 at 3:20 PM, Norman Maurer<norman@apache.org>  wrote:
>>
>>> yes but be aware that the keys will not in the "right order".
>>>
>>> Bye,
>>> Norman
>>>
>>> 2011/2/23 Roshan Dawrani<roshandawrani@gmail.com>:
>>>
>>>> On Wed, Feb 23, 2011 at 7:17 PM, Ching-Cheng Chen
>>>> <cchen@evidentsoftware.com>  wrote:
>>>>
>>>>> Actually, if you want to get ALL keys, I believe you can still use
>>>>> RangeSliceQuery with RP.
>>>>> Just use setKeys("","") as first batch call.
>>>>> Then use the last key from previous batch as startKey for next batch.
>>>>> Beware that since startKey is inclusive, so you'd need to ignore first
>>>>> key
>>>>> from now on.
>>>>> Keep going until you finish all batches.  You will know you'd need to
>>>>> stop
>>>>> when setKeys(key_xyz,"") return you only one key.
>>>>>
>>>> This is what I meant to suggest when I earlier said "So, if you want
>>>> all,
>>>> you will need to keep paging forward and collecting the keys." :-)
>>>>
>>>
>

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