Thanks for your explanation. Now it's clear for me.
On Tue, Apr 10, 2012 at 6:13 PM, Gary Helmling <[EMAIL PROTECTED]> wrote:
> Each and every HRegion on a given region server will have it's own
> distinct instance of your configured RegionObserver class.
> RegionCoprocessorEnvironment.getRegion() returns a reference to the
> HRegion containing the current coprocessor instance.
> The hierarchy is essentially:
> \_ HRegion
> \_ RegionCoprocessorHost
> \_ <your RegionObserver instance>
> (repeated for each HRegion).
> This blog post by Mingjie may help explain things a bit more:
> On Tue, Apr 10, 2012 at 2:30 AM, yonghu <[EMAIL PROTECTED]> wrote:
>> The description of this method is " /** @return the region associated
>> with this coprocessor */" and the return value is an HRegion instance.
>> If I configure the region-coprocessor class in hbase-site.xml. It
>> means that this coprocessor will be applied to every HRegion which
>> resides on this Region Server (if I understand right). Why this
>> method only return one HRgion instance not a list of HRgion
>> instances?Suppose that a region server has two HRegions, one is for
>> table 'test1', the other is for table 'test2'. Which HRgion instance
>> will be returned if I call RegionCoprocessorEnvironment.getReion()?