This may be a result of ACCUMULO-3372. If you jstack your new tablet server, does it show a deadlock?
$ jps -m 12345 Main tserver --address host:9997 $ jstack 12345 | grep -i deadlock Deadlock detected This particular bug only happens at start-up. There's a trivial patch (which you can find through the bug report), which will be in accumulo 1.6.2. -Eric On Mon, Jan 12, 2015 at 4:06 PM, Denis <de...@camfex.cz> wrote: > I have not tried yet anything newer than 1.6.1 > > On 1/12/15, Josh Elser <els...@apache.org> wrote: > > Denis wrote: > >> created https://issues.apache.org/jira/browse/ACCUMULO-3471 > > > > Thanks a bunch! > > > >> BTW, In 1.6.1 also balancing may get stuck until the master server is > >> restarted. > > > > Is this a known issue in 1.6.1 that's been since fixed or is it still > > outstanding? > > > >> But then, after the master restart, balancing works very > >> "aggressively", putting many tablets offline for quite long time > >> (minutes) > >> > >> On 1/11/15, Denis<de...@camfex.cz> wrote: > >>> Sometimes it left unbalanced with new tserver hosts zero tablets or > >>> much less that others. > >>> So I had to restart master to initiate the balancing process. > >>> Then balancing was performed slowly without putting thousands of > >>> tablets offline. > >>> > >>> On 1/11/15, John Vines<vi...@apache.org> wrote: > >>>> I have a hunch that the 1.4 version being used possibly had one or > more > >>>> of > >>>> the many bugs regarding balancing getting 'stuck', which was typically > >>>> resolved via bouncing the master. Denis, in 1.4 when you brought you > >>>> tserver back online, did you find that things were then balanced or > did > >>>> you > >>>> just have a tserver up and things were left unbalanced? > >>>> > >>>> On Sun, Jan 11, 2015 at 11:30 AM, Denis<de...@camfex.cz> wrote: > >>>> > >>>>> yes, per server > >>>>> > >>>>> On 1/11/15, Sean Busbey<bus...@cloudera.com> wrote: > >>>>>> On Sat, Jan 10, 2015 at 3:42 PM, Denis<de...@camfex.cz> wrote: > >>>>>> On 1/10/15, Christopher<ctubb...@apache.org> wrote: > >>>>>> > >>>>>>> ... > >>>>>>> 3) how many tablets do you have per server?.... > >>>>>> 3. about 6000 > >>>>>> > >>>>>> Just to confirm, this is 6000 tablets per-server and not 6000 > tablets > >>>>>> per-table or overall, right? > >>>>>> > >>>>>> > >>>>>> -- > >>>>>> Sean > >>>>>> > > >
