for http://localhost:8983/solr/images/select?fl=content&q=id:1&start=1
I'd get
{
"responseHeader":{
"zkConnected":true,
"status":0,
"QTime":1,
"params":{
"q":"*:*",
"_":"1524046333220"}},
"response":{"numFound":1,"start":0,"docs":[
{
"id":"1",
"content":"my-content-value",
"*content-type*":"text/plain"}]
}}
when i want
my-content-value
On 18 April 2018 at 10:55, Mikhail Khludnev <m...@apache.org> wrote:
> Lee, from this description I don see why it can't be addressed by fl,rows
> params. What makes it different form the typical Solr usage?
>
>
> On Wed, Apr 18, 2018 at 12:31 PM, Lee Carroll <
> lee.a.carr...@googlemail.com>
> wrote:
>
> > Sure, we want to return a single field's value for the top matching
> > document for a given query. Bare content rather than a full search result
> > listing.
> >
> > To be concrete:
> >
> > For a schema of fields id [unique key], content[stored],content-type[
> > stored]
> > For a request:
> >
> > 1. Request URL:
> > https://localhost/solr/content?q=id:1
> > 2. Request Method:
> > GET
> >
> > We get a response
> > HTTP/1.1 200 OK Content-Length: 16261 Content-Type: [content-type value]
> >
> > and the body to be the raw value of content
> >
> > In short clients consume directly the most relevant "content" returned
> from
> > solr queries they construct.
> >
> > Naively I've implemented a subclass of RawResponseWriter which takes the
> > first docs values and adds them to the appended "content" stream. Should
> I
> > selectively add the content stream depending on if this is the final
> > aggregation of cloud results (and provide a base class writer to act if
> > not), if so how do I know its the final aggregation. Or is adding the
> > content stream within the response writer a bad idea. Should that be
> being
> > added to the response somewhere else?
> >
> > Failing all of the above is asking about response writer an X / Y
> problem.
> > Is their a better way to achieve the above. I'd looked at transforming
> > response xml but that seemed not to offer a complete bare slate.
> >
> > Cheers Lee C
> >
> >
> > On 17 April 2018 at 21:36, Mikhail Khludnev <m...@apache.org> wrote:
> >
> > > In distributed search response writer is used twice
> > > https://lucene.apache.org/solr/guide/7_1/distributed-requests.html
> > > once slave node that's where response writer yields "json" content and
> it
> > > upset aggregator node which is expect only javabin.
> > > I hardly can comment on rrw, it's probably used for responding separate
> > > files in distrib=false mode.
> > > You can start from describing why you need to create own response
> writer.
> > >
> > > On Tue, Apr 17, 2018 at 7:02 PM, Lee Carroll <
> > lee.a.carr...@googlemail.com
> > > >
> > > wrote:
> > >
> > > > Ok. My expectation was the response writer would not be used until
> the
> > > > final serialization of the result. If my response writer breaks the
> > > > response writer contract, exactly the way rawResponseWriter does and
> > just
> > > > out puts a filed value how does that work? Does rawResponseWriter
> > support
> > > > cloud mode?
> > > >
> > > >
> > > >
> > > > On 17 April 2018 at 15:55, Mikhail Khludnev <m...@apache.org> wrote:
> > > >
> > > > > That's what should happen.
> > > > >
> > > > > Expected mime type application/octet-stream but got
> application/json.
> > > > >
> > > > > Distributed search coordinator expect to merge slave responses in
> > > javabin
> > > > > format. But slave's wt indicated json.
> > > > > As far as I know only javabin might be used to distributed search
> > > > > underneath. Coordinator itself might yield json.
> > > > >
> > > > > On Tue, Apr 17, 2018 at 4:23 PM, Lee Carroll <
> > > > lee.a.carr...@googlemail.com
> > > > > >
> > > > > wrote:
> > > > >
> > > > > > Sure
> > > > > >
> > > > > > with 1 shard 1 replica this request works fine
> > > > > >
> > > > > > 1. Request URL:
> > > > > > http://localhost:8983/solr/images/image?q=id:1
> > > > > > 2. Request Method:
> > > > > > GET
> > > > > > 3. Status Code:
> > > > > > 200 OK
> > > > > >
> > > > > > logs are clean
> > > > > >
> > > > > > with 2 shards 2 replicas the same request fails and in the logs
> > > > > >
> > > > > >
> > > > > > INFO - 2018-04-17 13:20:32.052; [c:images s:shard2 r:core_node7
> > > > > > x:images_shard2_replica_n4] org.apache.solr.core.SolrCore;
> > > > > > [images_shard2_replica_n4] webapp=/solr path=/image
> > > > > > params={df=text&distrib=false&qt=/image&fl=id&fl=score&
> > > > > > shards.purpose=4&start=0&fsv=true&shard.url=
> > > > > > http://10.224.30.207:8983/solr/images_shard2_replica_n4/
> > > > > > |http://10.224.30.207:7574/solr/images_shard2_replica_n6/
> > > > > > &rows=10&version=2&q=id:1&NOW=1523971232039&isShard=true&wt=
> > javabin}
> > > > > > hits=0 status=0 QTime=0
> > > > > > ERROR - 2018-04-17 13:20:32.055; [c:images s:shard1 r:core_node3
> > > > > > x:images_shard1_replica_n1] org.apache.solr.common.
> SolrException;
> > > > > > org.apache.solr.client.solrj.impl.HttpSolrClient$
> > > RemoteSolrException:
> > > > > > Error
> > > > > > from server at http://10.224.30.207:8983/
> > > solr/images_shard2_replica_n4
> > > > :
> > > > > > Expected mime type application/octet-stream but got
> > application/json.
> > > > > > at
> > > > > > org.apache.solr.client.solrj.impl.HttpSolrClient.
> > > > > > executeMethod(HttpSolrClient.java:607)
> > > > > > at
> > > > > > org.apache.solr.client.solrj.impl.HttpSolrClient.request(
> > > > > > HttpSolrClient.java:255)
> > > > > > at
> > > > > > org.apache.solr.client.solrj.impl.HttpSolrClient.request(
> > > > > > HttpSolrClient.java:244)
> > > > > > at
> > > > > > org.apache.solr.client.solrj.impl.LBHttpSolrClient.
> > > > > > doRequest(LBHttpSolrClient.java:483)
> > > > > > at
> > > > > > org.apache.solr.client.solrj.impl.LBHttpSolrClient.request(
> > > > > > LBHttpSolrClient.java:413)
> > > > > > at
> > > > > > org.apache.solr.handler.component.HttpShardHandlerFactory.
> > > > > > makeLoadBalancedRequest(HttpShardHandlerFactory.java:273)
> > > > > > at
> > > > > > org.apache.solr.handler.component.HttpShardHandler.
> > lambda$submit$0(
> > > > > > HttpShardHandler.java:175)
> > > > > > at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> > > > > > at java.util.concurrent.Executors$RunnableAdapter.
> > > > > call(Executors.java:511)
> > > > > > at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> > > > > > at
> > > > > > com.codahale.metrics.InstrumentedExecutorService$
> > > > > InstrumentedRunnable.run(
> > > > > > InstrumentedExecutorService.java:176)
> > > > > > at
> > > > > > org.apache.solr.common.util.ExecutorUtil$
> > MDCAwareThreadPoolExecutor.
> > > > > > lambda$execute$0(ExecutorUtil.java:188)
> > > > > > at
> > > > > > java.util.concurrent.ThreadPoolExecutor.runWorker(
> > > > > > ThreadPoolExecutor.java:1142)
> > > > > > at
> > > > > > java.util.concurrent.ThreadPoolExecutor$Worker.run(
> > > > > > ThreadPoolExecutor.java:617)
> > > > > > at java.lang.Thread.run(Thread.java:745)
> > > > > >
> > > > > > INFO - 2018-04-17 13:20:32.056; [c:images s:shard1 r:core_node3
> > > > > > x:images_shard1_replica_n1] org.apache.solr.core.SolrCore;
> > > > > > [images_shard1_replica_n1] webapp=/solr path=/image
> > params={q=id:1}
> > > > > > status=200 QTime=17
> > > > > > INFO - 2018-04-17 13:20:32.055; [c:images s:shard1 r:core_node3
> > > > > > x:images_shard1_replica_n1] org.apache.solr.core.SolrCore;
> > > > > > [images_shard1_replica_n1] webapp=/solr path=/image
> > > > > > params={df=text&distrib=false&qt=/image&fl=id&fl=score&
> > > > > > shards.purpose=4&start=0&fsv=true&shard.url=
> > > > > > http://10.224.30.207:8983/solr/images_shard1_replica_n1/
> > > > > > |http://10.224.30.207:7574/solr/images_shard1_replica_n2/
> > > > > > &rows=10&version=2&q=id:1&NOW=1523971232039&isShard=true&wt=
> > javabin}
> > > > > > hits=1 status=0 QTime=2
> > > > > >
> > > > > >
> > > > > > I've implemented getcontenttype simply as
> > > > > >
> > > > > > @Override
> > > > > > public String getContentType(SolrQueryRequest request,
> > > > > > SolrQueryResponse response) {
> > > > > >
> > > > > > return "application/json;charset=utf-8";
> > > > > > }
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > On 16 April 2018 at 17:37, Mikhail Khludnev <m...@apache.org>
> > wrote:
> > > > > >
> > > > > > > Lee,
> > > > > > > It's worth to send a stacktrace for such kind of inquiries.
> > > > > > > I guess it goes from QueryComponent.mergeIds() or so. Shard
> > > response
> > > > > > should
> > > > > > > contains <uniqueKey> from schema.xml field.
> > > > > > > I encounter something like this while troubleshooting
> > > > > > > https://lucene.apache.org/solr/guide/6_6/transforming-
> > > > > > > result-documents.html#TransformingResultDocuments-
> > > > > > > CoresandCollectionsinSolrCloud
> > > > > > >
> > > > > > >
> > > > > > > On Mon, Apr 16, 2018 at 6:56 PM, Lee Carroll <
> > > > > > lee.a.carr...@googlemail.com
> > > > > > > >
> > > > > > > wrote:
> > > > > > >
> > > > > > > > I've created a custom response writer which extends
> > > > > RawResponseWriter.
> > > > > > > The
> > > > > > > > basic operation is to output a single field value from the
> top
> > > > > matching
> > > > > > > doc
> > > > > > > > as the entire response. This works when shards = 1 but fails
> > when
> > > > > > shards
> > > > > > > > are greater than 1.
> > > > > > > >
> > > > > > > > I throw an error if the field in question is missing from the
> > top
> > > > > doc.
> > > > > > > This
> > > > > > > > happens when individual shards are being searched and only id
> > and
> > > > > score
> > > > > > > are
> > > > > > > > returned. I'm sure I've committed a basic error.
> > > > > > > >
> > > > > > > > Lee C
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > --
> > > > > > > Sincerely yours
> > > > > > > Mikhail Khludnev
> > > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Sincerely yours
> > > > > Mikhail Khludnev
> > > > >
> > > >
> > >
> > >
> > >
> > > --
> > > Sincerely yours
> > > Mikhail Khludnev
> > >
> >
>
>
>
> --
> Sincerely yours
> Mikhail Khludnev
>
