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Re: Multiple start regions in a table

by Arthur van Hoff :: Rate this Message:

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@...> 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@..., 650-283-0842

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