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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Coprocessors causes data access delay?
Date Tue, 29 Mar 2016 13:22:39 GMT
Is it possible to come up with unit test showing this behavior using simplified coprocessor
?

Thanks

> On Mar 29, 2016, at 5:42 AM, Jozef Vilcek <jozo.vilcek@gmail.com> wrote:
> 
> Hi,
> 
> I need a help to shed some light on following observation:
> 
> Through hbase shell I do PUT to a non existing cell (create) and immediate
> GET.
> When doing this against hbase table without a coprocessor, every GET shows
> the value immediately. When I enable a coprocessor on the table and perform
> the same check, I do not get a value for every GET. Sometimes GET returns
> nothing, like cell is not there. If I delay GET few minutes after PUT, then
> data are correctly retrieved.
> 
> I want to understand what is going on.
> Is coprocessor is doing something wrong? Is this somehow normal? or ... ?
> 
> Coprocessor is a RegionObserver doing data filtering / expiration based on
> predefined rules.
> HBase version is 1.0.0 from cloudera cdh5.5.1 distibution.
> 
> Thanks,
> Jozo

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