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https://issues.apache.org/jira/browse/SOLR-11130?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Noble Paul reassigned SOLR-11130:
---------------------------------
Assignee: Noble Paul
> SolrJ routes V2Request to wrong nodes and such nodes are not able to forward
> these requests correctly
> -----------------------------------------------------------------------------------------------------
>
> Key: SOLR-11130
> URL: https://issues.apache.org/jira/browse/SOLR-11130
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrJ, v2 API
> Affects Versions: 6.6, master (8.0)
> Reporter: Shalin Shekhar Mangar
> Assignee: Noble Paul
>
> I am trying to use V2Request to invoke the config API with SolrJ. Sometimes,
> I see a weird NullPointerException:
> {code}
> 5396 ERROR (qtp1277924867-37) [n:127.0.0.1:33527_solr ]
> o.a.s.s.HttpSolrCall null:java.lang.NullPointerException
> at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:518)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:378)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:322)
> {code}
> and the corresponding exception on the solrj client was:
> {code}
> org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteExecutionException:
> Error from server at http://127.0.0.1:33527/solr: Unknown Error
> at
> __randomizedtesting.SeedInfo.seed([33AAA14CC3DE7EE3:BBFE9E966D22131B]:0)
> at
> org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteExecutionException.create(HttpSolrClient.java:812)
> at
> org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:602)
> at
> org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:252)
> at
> org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:241)
> 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.client.solrj.impl.CloudSolrClient.sendRequest(CloudSolrClient.java:1121)
> at
> org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:862)
> at
> org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:793)
> at org.apache.solr.client.solrj.SolrClient.request(SolrClient.java:1219)
> at
> org.apache.solr.cloud.TestCloudSearcherWarming.test(TestCloudSearcherWarming.java:68)
> {code}
> The code used to invoke the api was:
> {code}
> V2Request request = new V2Request.Builder("/c/" + collectionName +
> "/config").withMethod(SolrRequest.METHOD.POST).withPayload(addListenerCommand).build();
> solrClient.request(request);
> {code}
> This exception happens when the config API call is sent to a Solr node which
> does not have any replica for the collection. Now in v1 API, solrj would
> refuse to send the request and complain that no default collection is set but
> the V2Request does not do that.
> So there are two bugs here:
> # V2Request tries to send request for collection X to a random node without
> caring for correct routing
> # The node receiving such request is not able to forward it to the right node
> and fails with a NPE.
> To solve 1, our options are:
> # Either we start requiring the same for V2 i.e. user must set default
> collection
> # We detect that users are trying to invoke a collection specific v2 api and
> we add a new method in V2RequestBuilder to specify a collection name and
> ensure that the user calls it.
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