Failed to create collection 'techproducts' due to: Underlying core creation failed while creating collection: techproducts

user_11301532 0
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I just started to learn solr with official documentation and during the first exercise "Index Techproducts Example Data" I failed due to following error: " Failed to create collection 'techproducts' due to: Underlying core creation failed while creating collection: techproducts".

I tried to change java version from 13 to 8 but it didn't helped.

Here is link to the documentation: https://lucene.apache.org/solr/guide/8_5/solr-tutorial.html#exercise-1

Stacktrace from solr Admin console

Collection: techproducts operation: create failed:org.apache.solr.common.SolrException: Underlying core creation failed while creating collection: techproducts
    at org.apache.solr.cloud.api.collections.CreateCollectionCmd.call(CreateCollectionCmd.java:304)
    at org.apache.solr.cloud.api.collections.OverseerCollectionMessageHandler.processMessage(OverseerCollectionMessageHandler.java:263)
    at org.apache.solr.cloud.OverseerTaskProcessor$Runner.run(OverseerTaskProcessor.java:504)
    at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:210)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
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4 Answers

I had run into similar situation while following Solr 's official tutorial as following

āžœ  solr-8.7.0 ERROR: Failed to create collection 'techproducts' due to: Underlying core creation failed while creating collection: techproducts

And problem solved my turning off my vpn. I guess the vpn routing probably messed up with solr's localhost setting somehow.

user_45473730

I had the same Underlying core creation failed... error too. Using Java 11, Windows 10.

The log file was ${solr-home}\example\cloud\node1\logs\solr.log. Inside it had:

org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at http://192.168.1.16:7574/solr: Error CREATEing SolrCore 'techproducts_shard1_replica_n1': Unable to create core [techproducts_shard1_replica_n1] Caused by: no segments* file found in LockValidatingDirectoryWrapper(NRTCachingDirectory(MMapDirectory@{solr_home}\example\cloud\node2\solr\techproducts_shard1_replica_n1\data\index lockFactory=org.apache.lucene.store.NativeFSLockFactory@16326253; maxCacheMB=48.0 maxMergeSizeMB=4.0)): files: [write.lock] at org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:681) ~[?:?]
at (etc. etc.)e

But this was the second time I launched solr. The first time it timed out trying to contact one of the nodes and the tutorial script aborted. But the nodes were still running. I killed them off using the windows task manager and not by using solr stop. So I suspect I left an instable mess behind and the second time the tutorial ran it crashed into this mess.

I erased everything and started over from unzipping and this third time there were no timeouts and the tutorial completed without error.

user_56113770

File: /opt/solr/server/etc/jetty.xml

(1) Name="requestHeaderSize" set Property name "solr.jetty.request.header.size" default="81920" (2) Name="responseHeaderSize"> set Property name="solr.jetty.response.header.size" default="81920"

(3) Restart Solr

user_136271860

Hm, tried this, still getting the exact same error.

After Change:

[Set name="requestHeaderSize"][Property name="solr.jetty.request.header.size" default="81920" /][/Set]
[Set name="responseHeaderSize"][Property name="solr.jetty.response.header.size" default="81920" /][/Set]

I stopped everything and retried, then I had Windows Firewall prompt me for 'SAP Machine' authorization for java 11 message, I accepted it, and retried. Then it worked. Seems Windows Firewall related.

user_46307290
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