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HBase, mail # user - Checking if a coprocessor was loaded successfully from client


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Mesika, Asaf 2012-12-09, 10:55
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yuzhihong@... 2012-12-09, 13:03
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Mesika, Asaf 2012-12-09, 20:29
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Ted Yu 2012-12-09, 22:25
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anil gupta 2012-12-10, 08:01
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Azury 2012-12-10, 08:12
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Re: Checking if a coprocessor was loaded successfully from client
Mesika, Asaf 2012-12-10, 13:12
What do you mean by "have to think"? Where in the HBase codebase have you seen that?
On Dec 10, 2012, at 10:12 AM, Azury wrote:

> Yes. we have to think Coprocessors are all loaded successfully if table was configured Coprocessors if this method return true.
>
>
> At 2012-12-10 16:01:13,"anil gupta" <[EMAIL PROTECTED]> wrote:
>> Hi Asaf,
>>
>> Have a look at the
>> *hasCoprocessor<http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/HTableDescriptor.html#hasCoprocessor%28java.lang.String%29>
>> * method of HTD:
>> http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/HTableDescriptor.html#hasCoprocessor(java.lang.String)
>>
>> It might be helpful for you. I have used it in past to check whether a
>> coprocessors is successfully added or not.
>>
>> HTH,
>> Anil
>>
>> On Sun, Dec 9, 2012 at 2:25 PM, Ted Yu <[EMAIL PROTECTED]> wrote:
>>
>>> On region server web UI, you should see the list of coprocessors loaded.
>>>
>>> But I guess you're looking for a programmatic way of detecting coprocessor
>>> deployment.
>>>
>>> Cheers
>>>
>>> On Sun, Dec 9, 2012 at 12:29 PM, Mesika, Asaf <[EMAIL PROTECTED]>
>>> wrote:
>>>
>>>> 0.94.0
>>>> On Dec 9, 2012, at 3:03 PM, [EMAIL PROTECTED] wrote:
>>>>
>>>>> Which hbase version are you targeting ?
>>>>>
>>>>> Thanks
>>>>>
>>>>>
>>>>>
>>>>> On Dec 9, 2012, at 2:55 AM, "Mesika, Asaf" <[EMAIL PROTECTED]>
>>>> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I wrote a custom Region Observer.
>>>>>> I'm currently writing an Installer class for it.
>>>>>> In this installer I'm adding the region observer by adding a
>>>> coprocessor to the HTableDescriptor, and then calling modifyTable by
>>>> HBaseAdmin.
>>>>>>
>>>>>> My question is: How can I check whether region observer was loaded
>>>> successfully for this table?
>>>>>>
>>>>>> I tried searching for a way to get the Coprocessor.State somehow for
>>> my
>>>> region observer so I'll know it's ACTIVE, but couldn't find a way.
>>>>>>
>>>>>>
>>>>>> Thank you,
>>>>>>
>>>>>> Asaf
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>
>>>>
>>>
>>
>>
>>
>> --
>> Thanks & Regards,
>> Anil Gupta
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Mesika, Asaf 2012-12-10, 13:11
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Ted Yu 2012-12-10, 16:03
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Asaf Mesika 2012-12-11, 05:46
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Ted Yu 2012-12-11, 06:47
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Asaf Mesika 2012-12-12, 07:08
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Ted Yu 2012-12-12, 19:44
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Andrew Purtell 2012-12-12, 21:47