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Posted to solr-user@lucene.apache.org by Robert Brown <ro...@intelcompute.com> on 2016/01/08 22:18:57 UTC
SolrCloud: Setting/finding node names for deleting replicas
Hi,
I'm having trouble identifying a replica to delete...
I've created a 3-shard cluster, all 3 created on a single host, then
added a replica for shard2 onto another host, no problem so far.
Now I want to delete the original shard, but got this error when trying
a *replica* param value I thought would work...
shard2/uk available replicas are core_node1,core_node4
I can't find any mention of core_node1 or core_node4 via the admin UI,
how would I know/find the name of each one?
Is it possible to set these names explicitly myself for easier maintenance?
Many thanks for any guidance,
Rob
Re: SolrCloud: Setting/finding node names for deleting replicas
Posted by Erick Erickson <er...@gmail.com>.
For some reason, "slice" is the preferred term in the _code_, while
"shard" is preferred in docs....
FWIW
Erick
On Fri, Jan 8, 2016 at 3:51 PM, Jeff Wartes <jw...@whitepages.com> wrote:
>
> Honestly, I have no idea which is "old". The solr source itself uses slice pretty consistently, so I stuck with that when I started the project last year. And logically, a shard being an instance of a slice makes sense to me. But one significant place where they word shard is exposed is the default names of the slices, so it’s a mixed bag.
>
>
> See here:
> https://github.com/whitepages/solrcloud_manager#terminology
>
>
>
>
>
>
> On 1/8/16, 2:34 PM, "Robert Brown" <ro...@intelcompute.com> wrote:
>
>>Thanks for the pointer Jeff,
>>
>>For SolrCloud it turned out to be...
>>
>>&property.coreNodeName=xxx
>>
>>btw, for your app, isn't "slice" old notation?
>>
>>
>>
>>
>>On 08/01/16 22:05, Jeff Wartes wrote:
>>>
>>> I’m pretty sure you could change the name when you ADDREPLICA using a core.name property. I don’t know if you can when you initially create the collection though.
>>>
>>> The CLUSTERSTATUS command will tell you the core names: https://cwiki.apache.org/confluence/display/solr/Collections+API#CollectionsAPI-api18
>>>
>>> That said, this tool might make things easier.
>>> https://github.com/whitepages/solrcloud_manager
>>>
>>>
>>> # shows cluster status, including core names:
>>> java -jar solrcloud_manager-assembly-1.4.0.jar -z zk0.example.com:2181/myapp
>>>
>>>
>>> # deletes a replica by node/collection/shard (figures out the core name under the hood)
>>> java -jar solrcloud_manager-assembly-1.4.0.jar deletereplica -z zk0.example.com:2181/myapp -c collection1 --node node1.example.com --slice shard2
>>>
>>>
>>> I mention this tool every now and then on this list because I like it, but I’m the author, so take that with a pretty big grain of salt. Feedback is very welcome.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On 1/8/16, 1:18 PM, "Robert Brown" <ro...@intelcompute.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> I'm having trouble identifying a replica to delete...
>>>>
>>>> I've created a 3-shard cluster, all 3 created on a single host, then
>>>> added a replica for shard2 onto another host, no problem so far.
>>>>
>>>> Now I want to delete the original shard, but got this error when trying
>>>> a *replica* param value I thought would work...
>>>>
>>>> shard2/uk available replicas are core_node1,core_node4
>>>>
>>>> I can't find any mention of core_node1 or core_node4 via the admin UI,
>>>> how would I know/find the name of each one?
>>>>
>>>> Is it possible to set these names explicitly myself for easier maintenance?
>>>>
>>>> Many thanks for any guidance,
>>>> Rob
>>>>
>>
Re: SolrCloud: Setting/finding node names for deleting replicas
Posted by Jeff Wartes <jw...@whitepages.com>.
Honestly, I have no idea which is "old". The solr source itself uses slice pretty consistently, so I stuck with that when I started the project last year. And logically, a shard being an instance of a slice makes sense to me. But one significant place where they word shard is exposed is the default names of the slices, so it’s a mixed bag.
See here:
https://github.com/whitepages/solrcloud_manager#terminology
On 1/8/16, 2:34 PM, "Robert Brown" <ro...@intelcompute.com> wrote:
>Thanks for the pointer Jeff,
>
>For SolrCloud it turned out to be...
>
>&property.coreNodeName=xxx
>
>btw, for your app, isn't "slice" old notation?
>
>
>
>
>On 08/01/16 22:05, Jeff Wartes wrote:
>>
>> I’m pretty sure you could change the name when you ADDREPLICA using a core.name property. I don’t know if you can when you initially create the collection though.
>>
>> The CLUSTERSTATUS command will tell you the core names: https://cwiki.apache.org/confluence/display/solr/Collections+API#CollectionsAPI-api18
>>
>> That said, this tool might make things easier.
>> https://github.com/whitepages/solrcloud_manager
>>
>>
>> # shows cluster status, including core names:
>> java -jar solrcloud_manager-assembly-1.4.0.jar -z zk0.example.com:2181/myapp
>>
>>
>> # deletes a replica by node/collection/shard (figures out the core name under the hood)
>> java -jar solrcloud_manager-assembly-1.4.0.jar deletereplica -z zk0.example.com:2181/myapp -c collection1 --node node1.example.com --slice shard2
>>
>>
>> I mention this tool every now and then on this list because I like it, but I’m the author, so take that with a pretty big grain of salt. Feedback is very welcome.
>>
>>
>>
>>
>>
>>
>>
>> On 1/8/16, 1:18 PM, "Robert Brown" <ro...@intelcompute.com> wrote:
>>
>>> Hi,
>>>
>>> I'm having trouble identifying a replica to delete...
>>>
>>> I've created a 3-shard cluster, all 3 created on a single host, then
>>> added a replica for shard2 onto another host, no problem so far.
>>>
>>> Now I want to delete the original shard, but got this error when trying
>>> a *replica* param value I thought would work...
>>>
>>> shard2/uk available replicas are core_node1,core_node4
>>>
>>> I can't find any mention of core_node1 or core_node4 via the admin UI,
>>> how would I know/find the name of each one?
>>>
>>> Is it possible to set these names explicitly myself for easier maintenance?
>>>
>>> Many thanks for any guidance,
>>> Rob
>>>
>
Re: SolrCloud: Setting/finding node names for deleting replicas
Posted by Robert Brown <ro...@intelcompute.com>.
Thanks for the pointer Jeff,
For SolrCloud it turned out to be...
&property.coreNodeName=xxx
btw, for your app, isn't "slice" old notation?
On 08/01/16 22:05, Jeff Wartes wrote:
>
> I’m pretty sure you could change the name when you ADDREPLICA using a core.name property. I don’t know if you can when you initially create the collection though.
>
> The CLUSTERSTATUS command will tell you the core names: https://cwiki.apache.org/confluence/display/solr/Collections+API#CollectionsAPI-api18
>
> That said, this tool might make things easier.
> https://github.com/whitepages/solrcloud_manager
>
>
> # shows cluster status, including core names:
> java -jar solrcloud_manager-assembly-1.4.0.jar -z zk0.example.com:2181/myapp
>
>
> # deletes a replica by node/collection/shard (figures out the core name under the hood)
> java -jar solrcloud_manager-assembly-1.4.0.jar deletereplica -z zk0.example.com:2181/myapp -c collection1 --node node1.example.com --slice shard2
>
>
> I mention this tool every now and then on this list because I like it, but I’m the author, so take that with a pretty big grain of salt. Feedback is very welcome.
>
>
>
>
>
>
>
> On 1/8/16, 1:18 PM, "Robert Brown" <ro...@intelcompute.com> wrote:
>
>> Hi,
>>
>> I'm having trouble identifying a replica to delete...
>>
>> I've created a 3-shard cluster, all 3 created on a single host, then
>> added a replica for shard2 onto another host, no problem so far.
>>
>> Now I want to delete the original shard, but got this error when trying
>> a *replica* param value I thought would work...
>>
>> shard2/uk available replicas are core_node1,core_node4
>>
>> I can't find any mention of core_node1 or core_node4 via the admin UI,
>> how would I know/find the name of each one?
>>
>> Is it possible to set these names explicitly myself for easier maintenance?
>>
>> Many thanks for any guidance,
>> Rob
>>
Re: SolrCloud: Setting/finding node names for deleting replicas
Posted by Jeff Wartes <jw...@whitepages.com>.
I’m pretty sure you could change the name when you ADDREPLICA using a core.name property. I don’t know if you can when you initially create the collection though.
The CLUSTERSTATUS command will tell you the core names: https://cwiki.apache.org/confluence/display/solr/Collections+API#CollectionsAPI-api18
That said, this tool might make things easier.
https://github.com/whitepages/solrcloud_manager
# shows cluster status, including core names:
java -jar solrcloud_manager-assembly-1.4.0.jar -z zk0.example.com:2181/myapp
# deletes a replica by node/collection/shard (figures out the core name under the hood)
java -jar solrcloud_manager-assembly-1.4.0.jar deletereplica -z zk0.example.com:2181/myapp -c collection1 --node node1.example.com --slice shard2
I mention this tool every now and then on this list because I like it, but I’m the author, so take that with a pretty big grain of salt. Feedback is very welcome.
On 1/8/16, 1:18 PM, "Robert Brown" <ro...@intelcompute.com> wrote:
>Hi,
>
>I'm having trouble identifying a replica to delete...
>
>I've created a 3-shard cluster, all 3 created on a single host, then
>added a replica for shard2 onto another host, no problem so far.
>
>Now I want to delete the original shard, but got this error when trying
>a *replica* param value I thought would work...
>
>shard2/uk available replicas are core_node1,core_node4
>
>I can't find any mention of core_node1 or core_node4 via the admin UI,
>how would I know/find the name of each one?
>
>Is it possible to set these names explicitly myself for easier maintenance?
>
>Many thanks for any guidance,
>Rob
>