Hi Billie,
it seems that in Accumulo 1.7 there is no ACCUMULO_PID_DIR anymore, it is
generated in the start-server.sh script with ps.
So I've tried this:
$ export ACCUMULO_CONF_DIR="${ACCUMULO_CONF_DIR:$ACCUMULO_HOME/conf2}"
$ bin/accumulo tserver --address serverIP
This will start the tserver on port of conf2 (currently 29997), but tries to
open another port which is in use:
Unable to start TServer
org.apache.thrift.transport.TTransportException: Could not create
ServerSocket on address serverIP:10002.
I think it is in use by the other tablet server...
Regards,
Sven
--
Sven Hodapp, M.Sc.,
Fraunhofer Institute for Algorithms and Scientific Computing SCAI,
Department of Bioinformatics
Schloss Birlinghoven, 53754 Sankt Augustin, Germany
[email protected]
www.scai.fraunhofer.de
----- Ursprüngliche Mail -----
> Von: "Billie Rinaldi" <[email protected]>
> An: "user" <[email protected]>
> Gesendet: Donnerstag, 10. Dezember 2015 13:33:47
> Betreff: Re: Multiple talbet servers on the same host
> Ah, that's my fault. I forgot another change you should make. In
> conf2/accumulo-env.sh, change ACCUMULO_LOG_DIR and ACCUMULO_PID_DIR and see
> if that helps.
> On Dec 10, 2015 3:29 AM, "Sven Hodapp" <[email protected]>
> wrote:
>
> Hi Billie,
>
> thanks for your reply! I've created a conf2 dir with tserver.port.client
> set to another port. I've also made shure, that in the environment
> ACCUMULO_CONF_DIR is set with conf2.
> But it's said "tablet server already running".
>
> I'm using Accumulo 1.7.0, currently on a single node. But because the
> machine is a big one (48 cores, 256 GB RAM) I'd like to test if multiple
> tservers on the same machine bring some benefit.
> Currently the single tablet server yields about 100k writes per second. Or
> may we have a disk-bottleneck?
>
> Regards,
> Sven
>
> --
> Sven Hodapp, M.Sc.,
> Fraunhofer Institute for Algorithms and Scientific Computing SCAI,
> Department of Bioinformatics
> Schloss Birlinghoven, 53754 Sankt Augustin, Germany
> [email protected]
> www.scai.fraunhofer.de
>
> ----- Ursprüngliche Mail -----
>> Von: "Billie Rinaldi" <[email protected]>
>> An: "user" <[email protected]>
>> Gesendet: Mittwoch, 9. Dezember 2015 18:40:25
>> Betreff: Re: Multiple talbet servers on the same host
>
>> Hi Sven,
>>
>> The tablet server port is configured in the accumulo-site.xml file. Ports
>> should not appear in the slaves file. Thus, you would need a separate
>> configuration directory for Accumulo to be able to start up a second set
> of
>> tablet servers on a different port. Let's say you copied your existing
>> conf directory to a directory named conf2, with the tserver.port.client
>> property set to a new value in the conf2/accumulo-site.xml file, and
> pushed
>> this conf2 directory out to all your nodes. Then you should be able to
>> start the second set of tablet servers by running
>> ACCUMULO_CONF_DIR=/path/to/conf2 $ACCUMULO_HOME/bin/tup.sh from one of the
>> nodes.
>>
>> That's how you could do this, but I'd encourage you to evaluate whether
> you
>> actually need to do this based on your workload, hardware, version of
>> Accumulo, etc.
>>
>> Billie
>>
>> On Wed, Dec 9, 2015 at 8:30 AM, Sven Hodapp <
> [email protected]>
>> wrote:
>>
>>> Hi there,
>>>
>>> I've read in the Accumulo Book (p. 496) that it should be possible to
>>> start on a (fat) machine multiple tablet servers to scale (also)
>>> vertically. Sadly it's not described how to do it. Also I didn't find
>>> anything about this issue in the official documentation.
>>>
>>> I thought it must be configured in ACCUMULO_HOME/conf/slaves.
>>> So I've added here the same IP with distinct ports multiple times ... in
>>> my naive thinking.
>>> But *no* additional tablet servers are started.
>>>
>>> Or I am completely wrong here?
>>>
>>> Regards,
>>> Sven
>>>
>>> --
>>> Sven Hodapp, M.Sc.,
>>> Fraunhofer Institute for Algorithms and Scientific Computing SCAI,
>>> Department of Bioinformatics
>>> Schloss Birlinghoven, 53754 Sankt Augustin, Germany
>>> [email protected]
> >> www.scai.fraunhofer.de
