Is there a reason to not just stop the cluster, reset the heap and restart the cluster? That is simpler.
On Mon, Nov 29, 2021 at 9:37 AM dev1 <d...@etcoleman.com> wrote: > Yes – and don’t forget to reset it back when you are done. > > > > *From:* Ligade, Shailesh [USA] <ligade_shail...@bah.com> > *Sent:* Monday, November 29, 2021 9:36 AM > *To:* user@accumulo.apache.org > *Subject:* RE: accumulo tserver rolling restart > > > > Thanks, > > > > I am assuming I can set that property using shell and it will take effect > immediately? > > > > Thanks > > > > -S > > > > *From:* dev1 <d...@etcoleman.com> > *Sent:* Monday, November 29, 2021 9:25 AM > *To:* 'user@accumulo.apache.org' <user@accumulo.apache.org> > *Subject:* [External] RE: accumulo tserver rolling restart > > > > See > https://accumulo.apache.org/1.10/accumulo_user_manual.html#_restarting_process_on_a_node > <https://urldefense.com/v3/__https:/accumulo.apache.org/1.10/accumulo_user_manual.html*_restarting_process_on_a_node__;Iw!!May37g!evyseDphy3PM_d8-tSlk89Sw1fFlSXHtH7vhiQedtcADc_P7OLEHw2kVZjlQ4Q8G_Q$> > – A note on rolling restarts. > > > > There is property that can be set (table.suspend.duration) that will delay > the reassignment while a tserver is restarting – there is a trade-off on > the data not being available so try to minimize the time the tserver is > off-line. > > > > *From:* Ligade, Shailesh [USA] <ligade_shail...@bah.com> > *Sent:* Monday, November 29, 2021 9:19 AM > *To:* user@accumulo.apache.org > *Subject:* accumulo tserver rolling restart > > > > Hello, > > > > I want to restart al the tservers, say I updated the tserver heap size. > Since we ar eusing system, I can issue restart command on a tserver. This > causes all sorts of tablet movements even though accumulo is down for may > be a second. If I wait for all unassigned tables to become 0, then to > restart next tserver, then to completely restart a small cluster (6-8 > nodes) take hours (roughly 4k+ tablets per tserver) > > > > What may be right way to perform such routine maintenance operation? Is > there a delay setting we can change so that it will not move tablets > around? What may be a safe delay value? > > > > -S >
