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HBase, mail # dev - assignment - is master beeing a watchdog useful?


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Re: assignment - is master beeing a watchdog useful?
Jimmy Xiang 2012-12-06, 18:55
On Thu, Dec 6, 2012 at 10:44 AM, Stack <[EMAIL PROTECTED]> wrote:
> On Thu, Dec 6, 2012 at 10:39 AM, Jimmy Xiang <[EMAIL PROTECTED]> wrote:
>
>> The master sending a close on a region that is opening will result in
>> cancelling the open.
>>
>>
> So you think we could use this in say the TM instead of taking over the
> znode and hoping it will notice the hijacking (currently, by trying to
> transition the znode or alternatively by having a watcher on the znode so
> it gets a callback when the master takes it over)?
>

Currently, the rs seems to not have a watcher on the znode. It could use a
watcher of course.

>
>> Before we remove it, should we list all exceptional cases and make
>> sure they are covered?
>>
>
> No harm I'd say.  Could do it in hbase-7247?

OK.
>
> St.Ack