Error creating SOLR core

cstifarol — Wed, 23 Jun 2021 14:21:24 GMT

Hi,

I performed a backup of Alfresco via tutorial: https://hub.alfresco.com/t5/alfresco-content-services-blog/creating-and-restoring-backups-for-alfresco-with-docker-compose/ba-p/305070

Until then, alright.

I restored it and the environment is working perfectly, but SOLR starts with an error and cannot create the Alfresco and Archive cores, showing the following message:

solr6_1                  | 2021-06-23 13:54:12.406 ERROR (Thread-12) [   x:alfresco] o.a.s.AlfrescoCoreAdminHandler Failed to create default alfresco cores (workspace/archive stores)
solr6_1                  | org.apache.solr.common.SolrException: Error CREATEing SolrCore 'alfresco': Unable to create core [alfresco] Caused by: /opt/alfresco-search-services/data/alfresco/index/write.lock
solr6_1                  |      at org.apache.solr.core.CoreContainer.create(CoreContainer.java:900)
solr6_1                  |      at org.alfresco.solr.AlfrescoCoreAdminHandler.createAndRegisterNewCore(AlfrescoCoreAdminHandler.java:803)
solr6_1                  |      at org.alfresco.solr.AlfrescoCoreAdminHandler.newCore(AlfrescoCoreAdminHandler.java:707)
solr6_1                  |      at org.alfresco.solr.AlfrescoCoreAdminHandler.lambda$setupNewDefaultCores$3(AlfrescoCoreAdminHandler.java:287)
solr6_1                  |      at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
solr6_1                  |      at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
solr6_1                  |      at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
solr6_1                  |      at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
solr6_1                  |      at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
solr6_1                  |      at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
solr6_1                  |      at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
solr6_1                  |      at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
solr6_1                  |      at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
solr6_1                  |      at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
solr6_1                  |      at org.alfresco.solr.AlfrescoCoreAdminHandler.setupNewDefaultCores(AlfrescoCoreAdminHandler.java:280)
solr6_1                  |      at org.alfresco.solr.AlfrescoCoreAdminHandler.lambda$new$0(AlfrescoCoreAdminHandler.java:228)
solr6_1                  |      at java.base/java.lang.Thread.run(Thread.java:834)
solr6_1                  | Caused by: org.apache.solr.common.SolrException: Unable to create core [alfresco]
solr6_1                  |      at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:966)
solr6_1                  |      at org.apache.solr.core.CoreContainer.create(CoreContainer.java:863)
solr6_1                  |      ... 16 more
solr6_1                  | Caused by: org.apache.solr.common.SolrException: /opt/alfresco-search-services/data/alfresco/index/write.lock
solr6_1                  |      at org.apache.solr.core.SolrCore.<init>(SolrCore.java:977)
solr6_1                  |      at org.apache.solr.core.SolrCore.<init>(SolrCore.java:830)
solr6_1                  |      at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:950)
solr6_1                  |      ... 17 more
solr6_1                  | Caused by: java.nio.file.AccessDeniedException: /opt/alfresco-search-services/data/alfresco/index/write.lock
solr6_1                  |      at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:90)
solr6_1                  |      at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
solr6_1                  |      at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)
solr6_1                  |      at java.base/sun.nio.fs.UnixFileSystemProvider.newFileChannel(UnixFileSystemProvider.java:182)
solr6_1                  |      at java.base/java.nio.channels.FileChannel.open(FileChannel.java:292)
solr6_1                  |      at java.base/java.nio.channels.FileChannel.open(FileChannel.java:345)
solr6_1                  |      at org.apache.lucene.store.NativeFSLockFactory.obtainFSLock(NativeFSLockFactory.java:113)
solr6_1                  |      at org.apache.lucene.store.FSLockFactory.obtainLock(FSLockFactory.java:41)
solr6_1                  |      at org.apache.lucene.store.BaseDirectory.obtainLock(BaseDirectory.java:45)
solr6_1                  |      at org.apache.lucene.store.FilterDirectory.obtainLock(FilterDirectory.java:104)
solr6_1                  |      at org.apache.lucene.index.IndexWriter.isLocked(IndexWriter.java:4776)
solr6_1                  |      at org.apache.solr.core.SolrCore.initIndex(SolrCore.java:709)
solr6_1                  |      at org.apache.solr.core.SolrCore.<init>(SolrCore.java:923)
solr6_1                  |      ... 19 more

Has anyone been through this situation that can help me?

Thanks!

Re: Error creating SOLR core

angelborroy — Thu, 24 Jun 2021 11:38:57 GMT

What OS are you using in the host? Linux?

Re: Error creating SOLR core

cstifarol — Mon, 28 Jun 2021 19:15:19 GMT

Hi,

Yes, CentOS 7.

Re: Error creating SOLR core

angelborroy — Tue, 29 Jun 2021 07:52:49 GMT

It seems a permission issue then, with SOLR data folder.

That should be uid=33007

Re: Error creating SOLR core

cstifarol — Mon, 05 Jul 2021 19:26:51 GMT

Ok, thanks.
But I have already put the permission for that userid in the corresponding folder and even then error persists.
Any more ideas?

Re: Error creating SOLR core

Kenon5553 — Wed, 07 Jul 2021 02:37:14 GMT

Since it might help anybody with the same issue, it's indeed caused by permission issues when using root. The script doesn't terminate quickly when executing the command as root and instead creates a piece of the core definition before failing.

So first cleanup the broken core:

bin/solr delete -c mycore

Make sure that no folder(s) linger under /var/solr/data for your mycore core. paymydoctor

Next create the core as the solr user

su -u solr -c "/opt/solr/bin/solr create_core -c mycore"

This time it should succeed

Re: Error creating SOLR core

cristinamr — Wed, 07 Jul 2021 09:15:51 GMT

Thank you for share your solution, for sure will help more community members in the future! 🙂

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