Philip Pock created SOLR-10428:
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Summary: CloudSolrClient: Qerying multiple collection aliases
leads to SolrException: Collection not found
Key: SOLR-10428
URL: https://issues.apache.org/jira/browse/SOLR-10428
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: SolrJ
Affects Versions: 6.4.2, 6.4.0, 6.5, 6.4.1, master (7.0)
Reporter: Philip Pock
Priority: Minor
We have multiple collections and an alias is created for each of them. e.g.:
alias-a -> collection-a, alias-b -> collection-b
We search in multiple collections by passing the aliases of the collections in
the collections parameter.
{code}solrClient.query("alias-a,alias-b", params, SolrRequest.METHOD.POST){code}
The client can't find the collection and throws an Exception. Relevant parts of
the stacktrace using v6.5.0:
{noformat}
org.apache.solr.common.SolrException: Collection not found: collection-a
at
org.apache.solr.client.solrj.impl.CloudSolrClient.getCollectionNames(CloudSolrClient.java:1394)
at
org.apache.solr.client.solrj.impl.CloudSolrClient.requestWithRetryOnStaleState(CloudSolrClient.java:1087)
at
org.apache.solr.client.solrj.impl.CloudSolrClient.request(CloudSolrClient.java:1057)
at
org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:160)
at org.apache.solr.client.solrj.SolrClient.query(SolrClient.java:974)
{noformat}
Everything works fine with a single alias.
I think this issue was introduced with SOLR-9784. Please see my comment below.
{code:title=org.apache.solr.client.solrj.impl.CloudSolrClient }
Set<String> getCollectionNames(String collection) {
List<String> rawCollectionsList = StrUtils.splitSmart(collection, ",",
true);
Set<String> collectionNames = new HashSet<>();
for (String collectionName : rawCollectionsList) {
if (stateProvider.getState(collectionName) == null) {
// I assume that collectionName should be passed to getAlias here
String alias = stateProvider.getAlias(collection);
if (alias != null) {
List<String> aliasList = StrUtils.splitSmart(alias, ",", true);
collectionNames.addAll(aliasList);
continue;
}
throw new SolrException(ErrorCode.BAD_REQUEST, "Collection not found:
" + collectionName);
}
collectionNames.add(collectionName);
}
return collectionNames;
}
{code}
The suggested change is similar to the previous revision:
https://github.com/apache/lucene-solr/commit/5650939a8d41b7bad584947a2c9dcedf3774b8de#diff-c8d54eacd46180b332c86c7ae448abaeL1301
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