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HBase >> mail # user >> LIMITATIONS OF CODE THAT CAN BE WRITTEN IN HBASE COPROCESSORS


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chaitanya eswar 2013-02-28, 05:55
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Ted Yu 2013-02-28, 17:32
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Re: LIMITATIONS OF CODE THAT CAN BE WRITTEN IN HBASE COPROCESSORS
> > When a put is done in one table  i have to store those puts using a
static
> > variable in coprocessor

Let's start here. Static variable?
On Thu, Feb 28, 2013 at 9:32 AM, Ted Yu <[EMAIL PROTECTED]> wrote:

> bq. whenever client issues flush i have to update the other table.
>
> Are you updating second table in coprocessor ? That is anti-pattern
> according to Andrew Purtell.
>
> If you can show us some log (region server, master), that would help us
> troubleshoot.
>
> BTW there is no need to capitalize every letter in the email subject.
>
> Cheers
>
> On Wed, Feb 27, 2013 at 9:55 PM, chaitanya eswar <
> [EMAIL PROTECTED]> wrote:
>
> > Hi,
> >
> > I am trying to  do this,
> > When a put is done in one table  i have to store those puts using a
> static
> > variable in coprocessor and whenever client issues flush i have to update
> > the other table.
> > When i try to do something new coprocessor isn't getting deployed and
> > sometimes even the master isn't getting started.
> > I wish to know whether there are any limitations to functionality of
> > coprocessors
> >
>

--
Best regards,

   - Andy

Problems worthy of attack prove their worth by hitting back. - Piet Hein
(via Tom White)
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Michael Segel 2013-02-28, 16:31