Minutes at a time is a lot of time. I think Eric Newton was looking at some performance issues with assignments. This could be related to that.
-- Christopher L Tubbs II http://gravatar.com/ctubbsii On Sat, Jan 10, 2015 at 4:42 PM, Denis <[email protected]> wrote: > 1. client requests are timed out. also http://monitor/tables shows > number of offline tablets for each table. > 2. few minutes (up to 10) > 3. about 6000 > 4. yes > 5. I do not remember the problem with accumulo 1.4. > > On 1/10/15, Christopher <[email protected]> wrote: > > Adding a new tserver creates an imbalanced situation, where tablets are > not > > spread evenly across tablet servers. The tablet balancer in the master > > server occasionally rebalances tablets. During the short period of time > > those tablets are migrating, they will be temporarily offline. That > should > > have always been the case and would be perfectly normal. > > > > I'm curious: > > 1) how did you detect these were offline? > > 2) how long were they offline? > > 3) how many tablets do you have per server? > > 4) are you using the default balancers? > > 5) in what sense do you mean "regression"? are you thinking this is > linked > > to a previous bug/issue? > > > > > > > > -- > > Christopher L Tubbs II > > http://gravatar.com/ctubbsii > > > > On Sat, Jan 10, 2015 at 10:31 AM, Denis <[email protected]> wrote: > > > >> Hi > >> > >> I recently upgraded my Accumulo cluster from 1.4 to 1.6 and noticed a > >> regression. > >> > >> Removing a tserver makes puts some tablets offline for a while until > >> other tservers start handling them, that's normal. > >> > >> But with 1.6 the same happens on adding a tserver as well. > >> Is it ok? > >> > > >
