thanks
in hbase 0.99.0, I find the rb file: draining_servers.rb
i have some suggestions on this tool:
1. if I add rs hs1 to draining_servers, when hs1 restart, the zk node still
exists in zk, but hmaster will not treat hs1 as draining_servers
i think when we add a hs to draining_servers, we do not need to store the
start code in zk, just store the hostName and port
2. we add hs1 to draining_servers, but if hs1 always restart, we will need to
add hs1 several times
when we need to delete the draining_servers info of hs1, we will need to
delete hs1 several times
finally, what is the original motivation of this tool, some scenario
descriptions are good.
At 2016-04-26 11:33:10, "Ted Yu" <[email protected]> wrote:
>Please take a look at:
>bin/draining_servers.rb
>
>On Mon, Apr 25, 2016 at 8:12 PM, WangYQ <[email protected]> wrote:
>
>> in hbase, I find there is a "drain regionServer" feature
>>
>>
>> if a rs is added to drain regionServer in ZK, then regions will not be
>> move to on these regionServers
>>
>>
>> but, how can a rs be add to drain regionServer, we add it handly or rs
>> will add itself automaticly
