[SOLR-15145] Older versions of SolrJ (pre-8.8.0) hit an NPE when computing the base_url for core node props

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 8.8
• Fix Version/s: 8.8.1
• Component/s: SolrJ
• Assignee: Timothy Potter
• Reporter: Timothy Potter
• Created: 08/Feb/21 15:36
• Updated: 23/Feb/21 16:20
• Resolved: 10/Feb/21 16:59

Description

From the mailing list:

Caused by: java.lang.NullPointerException

              at deployment.uleaf.ear//org.apache.solr.common.cloud.ZkCoreNodeProps.getCoreUrl(ZkCoreNodeProps.java:53)

              at deployment.uleaf.ear//org.apache.solr.client.solrj.impl.BaseCloudSolrClient.lambda$sendRequest$2(BaseCloudSolrClient.java:1161)

              at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)

              at deployment.uleaf.ear//org.apache.solr.client.solrj.impl.BaseCloudSolrClient.sendRequest(BaseCloudSolrClient.java:1159)

              at deployment.uleaf.ear//org.apache.solr.client.solrj.impl.BaseCloudSolrClient.requestWithRetryOnStaleState(BaseCloudSolrClient.java:934)

              ... 166 more

see: https://lists.apache.org/thread.html/r3d131030f0a7026235451f71fabdae6d6b7c2f955822c75dcad4d41f%40%3Csolr-user.lucene.apache.org%3E

Issue Links

• Blocked: SOLR-15134 Solr upgrade order / documentation
• is caused by: SOLR-12182 Can not switch urlScheme in 7x if there are any cores in the cluster
• relates to: SOLR-15148 Include a backcompat utility class with a main in solrj that we can use to test older SolrJ against a release candidate
• links to: GitHub Pull Request #2328
• links to: GitHub Pull Request #2346
• links to: GitHub Pull Request #2355
• links to: GitHub Pull Request #2357
• links to: GitHub Pull Request #2366