Generally you want your delimiters to be less than any valid character. For
normal character data I've found tab (0x09) works well, it's pretty much the
first option. Forward slash (0x2f) is less reliable depending on what other
non-alphanumeric characters are allowed.
-chris
On Aug 22, 2011, at 5:04 PM, Mark wrote:
> I have another question though ;)
>
> Is there a better separator I could use to accomplish natural sorting? Also
> what is the preferred way to use start and stop keys when scanning? For
> example: STARTROW => "foo", ENDROW => "foo#{what should go here?}".
>
> Thanks
>
> On 8/22/11 4:59 PM, Mark wrote:
>> After further investigation it turns out it is my use case.
>>
>> My keys are actually in the form of:
>> "idx_query/foo bar/9223372035540718511"
>> "idx_query/foo/9223372035540718648"
>>
>> Now that I look at it, it make perfect sense why "foo bar" comes before
>> "foo/"
>>
>> Sorry for the confusion.
>>
>> On 8/22/11 9:16 AM, Chris Tarnas wrote:
>>> Good point on the sorting issues with thrift - what client language are you
>>> using? Using perl I have not seen inconstancies in ordering.
>>>
>>> Do your strings have any particular terminator that is being included but
>>> not seen in your output? Can you send out the rowkeys from scans in the
>>> HBase shell? That would help narrow it down.
>>>
>>> -chris
>>>
>>>
>>>
>>> On Aug 22, 2011, at 10:55 AM, Jesse Hutton wrote:
>>>
>>>> I don't use the thrift API, but my suspicion is that it doesn't return
>>>> results in the correct order. You're not the only one I've seen report
>>>> strange things about results ordering recently, and IIRC they were using
>>>> thrift as well.
>>>>
>>>> Can you verify that the results sort the same using the Java API or even by
>>>> looking at it in the HBase shell?
>>>>
>>>> Jesse
>>>>
>>>> On Mon, Aug 22, 2011 at 11:28 AM, Mark<static.void....@gmail.com> wrote:
>>>>
>>>>> Im still also confused on how "foo " is less than "foo". Aren't their
>>>>> respective bytes [102, 111, 111, 32] , and [102, 111, 111] ?
>>>>>
>>>>>
>>>>> On 8/22/11 7:33 AM, Mark wrote:
>>>>>
>>>>>> Is there anyway to around this to achieve natural ordering? Thanks
>>>>>>
>>>>>> On 8/21/11 10:17 PM, Chris Tarnas wrote:
>>>>>>
>>>>>>> HBase doesn't use the localized sorting rules, it sorts on the byte
>>>>>>> value. Space is ASCII 32, a value less than the alphanumeric characters.
>>>>>>>
>>>>>>> -chris
>>>>>>>
>>>>>>> On Aug 21, 2011, at 8:11 PM, Mark<static.void....@gmail.com**> wrote:
>>>>>>>
>>>>>>> FYI I am using openScannerWithPrefix thrift api call
>>>>>>>> On 8/21/11 6:47 PM, Mark wrote:
>>>>>>>>
>>>>>>>>> Why when scanning do I see the following sort order?
>>>>>>>>>
>>>>>>>>> "foo bar"
>>>>>>>>> "foo bar"
>>>>>>>>> "foo"
>>>>>>>>>
>>>>>>>>> I thought that "foo" would be sorted before "foo bar" since this is
>>>>>>>>> natural ordering. Why am I seeing these results?
>>>>>>>>>
