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From "Arthur van Hoff" <...@ellerdale.com>
Subject Re: Multiple start regions in a table
Date Wed, 12 Nov 2008 18:51:22 GMT
Below are the two regions in the .META. scan. I don't think either of
them is disabled.
The table is too large to count, and I am not sure how to enable DEBUG.

 wikipedia,,1226039865543    column=historian:assignment,
timestamp=1226471612375, value=Region assigned to server
192.168.33.31:60020
 wikipedia,,1226039865543    column=historian:open,
timestamp=1226471627434, value=Region opened on server :
gore.int.ellerdale.com
 wikipedia,,1226039865543    column=historian:split,
timestamp=1226039870630, value=Region split from  :
wikipedia,,1226039822665
 wikipedia,,1226039865543    column=info:regioninfo,
timestamp=1226039870633, value=REGION => {NAME =>
'wikipedia,,1226039865543', STARTKEY => '', ENDKEY => '0000020097',
ENCODED => 1423314116, TABLE => {{NAME => 'wikipedia', IS_ROOT =>
'false', IS_META => 'false', FAMILIES => [{NAME => 'data', BLOOMFILTER
=> 'false', VERSIONS => '3', COMPRESSION => 'NONE', LENGTH =>
'2147483647', TTL => '-1', IN_MEMORY => 'false', BLOCKCACHE =>
'false'}]}}
 wikipedia,,1226039865543    column=info:server,
timestamp=1226471627433, value=192.168.33.31:60020
 wikipedia,,1226039865543    column=info:serverstartcode,
timestamp=1226471627433, value=1226471577772
 wikipedia,,1226469112210    column=historian:assignment,
timestamp=1226471612379, value=Region assigned to server
192.168.33.31:60020
 wikipedia,,1226469112210    column=historian:open,
timestamp=1226471630431, value=Region opened on server :
gore.int.ellerdale.com
 wikipedia,,1226469112210    column=historian:split,
timestamp=1226469113121, value=Region split from  :
wikipedia,,1226356665025
 wikipedia,,1226469112210    column=info:regioninfo,
timestamp=1226469113125, value=REGION => {NAME =>
'wikipedia,,1226469112210', STARTKEY => '', ENDKEY => '0000003046',
ENCODED => 566585206, TABLE => {{NAME => 'wikipedia', IS_ROOT =>
'false', IS_META => 'false', FAMILIES => [{NAME => 'data', BLOOMFILTER
=> 'false', VERSIONS => '3', COMPRESSION => 'NONE', LENGTH =>
'2147483647', TTL => '-1', IN_MEMORY => 'false', BLOCKCACHE =>
'false'}]}}
 wikipedia,,1226469112210    column=info:server,
timestamp=1226471630430, value=192.168.33.31:60020
 wikipedia,,1226469112210    column=info:serverstartcode,
timestamp=1226471630430, value=1226471577772


On Wed, Nov 12, 2008 at 10:09 AM, stack <stack@duboce.net> wrote:
>
> Are they both enabled?
>
> You can see by doing "scan '.META.'" in the shell and then look at the particular regions
in the output.  Disabled regions will have a disabled attribute.
>
> What error are you seeing when in your job?
>
> You could enable DEBUG and then in shell try running "count 'TABLENAME'".  With DEBUG
enabled, you'll see the regions loading and you'll be able to pinpoint the problematic one.
 Or, if your table is large, run a "scan 'TABLENAME', ['NONEXISTANT_COLUMNNAME']".  That'll
cause the scanner to spin through all regions quickly -- there'll be no values found as it
scans -- and again with DEBUG you can see the regions loading and figure the bad one.
>
> When you've found the bad region, look at its listing in the '.META.' output.  Or paste
it in here and we'll take a look for you.
>
> Thanks Arthur,
> St.Ack
>
>
> Arthur van Hoff wrote:
>>
>> Hi,
>>
>> I have a table which appears to have two regions without a start key.
>> Is that expected? My job is getting stuck scanning these two regions.
>>
>> Any suggestions?
>>
>> Thanks.
>>
>



--
Arthur van Hoff - Grand Master of Alphabetical Order
The Ellerdale Project, Menlo Park, CA
avh@ellerdale.com, 650-283-0842

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