How to do re-index of Solr in Alfresco?

I am working with Alfresco Share 5.2 and currently trying to do re-index of Solr on Test server.

Steps which I covered are:

stop Alfresco service;
delete content from model directory;

root@ip-10-200-2-88:/opt/alfresco/alf_data/solr4/model# rm *

delete content from index directories inside archive and workspace folders;


root@ip-10-200-2-88:/opt/alfresco/alf_data/solr4/index/archive/SpacesStore/index# rm *
root@ip-10-200-2-88:/opt/alfresco/alf_data/solr4/index/workspace/Spacestore/index# rm *

start Alfresco service.

After that I check the logs and I am getting this kind of error:

 ERROR [solr.tracker.AbstractTracker] [org.alfresco.solr.AlfrescoCoreAdminHandler@2c708e13_Worker-1] Model tracking failed
 org.alfresco.error.AlfrescoRuntimeException: 02290000 GetModelsDiff return status is 404
        at org.alfresco.solr.client.SOLRAPIClient.getModelsDiff(SOLRAPIClient.java:1181)
        at org.alfresco.solr.tracker.ModelTracker.trackModelsImpl(ModelTracker.java:256)
        at org.alfresco.solr.tracker.ModelTracker.trackModels(ModelTracker.java:214)
        at org.alfresco.solr.tracker.ModelTracker.ensureFirstModelSync(ModelTracker.java:236)
        at org.alfresco.solr.tracker.CoreWatcherJob.registerForCore(CoreWatcherJob.java:145)
        at org.alfresco.solr.tracker.CoreWatcherJob.execute(CoreWatcherJob.java:82)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)
2023-03-29 09:35:13,375  ERROR [solr.tracker.AbstractTracker] [org.alfresco.solr.AlfrescoCoreAdminHandler@2c708e13_Worker-2] Tracking failed
 org.alfresco.error.AlfrescoRuntimeException: 02290001 GetModelsDiff return status is 404
        at org.alfresco.solr.client.SOLRAPIClient.getModelsDiff(SOLRAPIClient.java:1181)
        at org.alfresco.solr.tracker.ModelTracker.trackModelsImpl(ModelTracker.java:256)
        at org.alfresco.solr.tracker.ModelTracker.trackModels(ModelTracker.java:214)
        at org.alfresco.solr.tracker.ModelTracker.doTrack(ModelTracker.java:174)
        at org.alfresco.solr.tracker.AbstractTracker.track(AbstractTracker.java:190)
        at org.alfresco.solr.tracker.TrackerJob.execute(TrackerJob.java:54)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)
2023-03-29 09:35:13,392  ERROR [solr.tracker.AbstractTracker] [org.alfresco.solr.AlfrescoCoreAdminHandler@2c708e13_Worker-1] Model tracking failed
 org.alfresco.error.AlfrescoRuntimeException: 02290002 GetModelsDiff return status is 404
        at org.alfresco.solr.client.SOLRAPIClient.getModelsDiff(SOLRAPIClient.java:1181)
        at org.alfresco.solr.tracker.ModelTracker.trackModelsImpl(ModelTracker.java:256)
        at org.alfresco.solr.tracker.ModelTracker.trackModels(ModelTracker.java:214)
        at org.alfresco.solr.tracker.ModelTracker.ensureFirstModelSync(ModelTracker.java:236)
        at org.alfresco.solr.tracker.CoreWatcherJob.registerForCore(CoreWatcherJob.java:145)
        at org.alfresco.solr.tracker.CoreWatcherJob.execute(CoreWatcherJob.java:82)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:563)
2023-03-29 09:35:15,016  ERROR [solr.tracker.AbstractTracker] [org.alfresco.solr.AlfrescoCoreAdminHandler@2c708e13_Worker-7] Model tracking failed
 org.alfresco.error.AlfrescoRuntimeException: 02290006 GetModelsDiff return status is 404
        at org.alfresco.solr.client.SOLRAPIClient.getModelsDiff(SOLRAPIClient.java:1181)
        at org.alfresco.solr.tracker.ModelTracker.trackModelsImpl(ModelTracker.java:256)
        at org.alfresco.solr.tracker.ModelTracker.trackModels(ModelTracker.java:214)
        at org.alfresco.solr.tracker.ModelTracker.ensureFirstModelSync(ModelTracker.java:236)
        at org.alfresco.solr.component.EnsureModelsComponent.prepare(EnsureModelsComponent.java:87)
        at org.apache.solr.handler.component.AlfrescoSearchHandler.handleRequestBody(AlfrescoSearchHandler.java:292)
        at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
        at org.alfresco.solr.Cloud.getResponse(Cloud.java:165)
        at org.alfresco.solr.Cloud.getSolrDocumentList(Cloud.java:149)
        at org.alfresco.solr.SolrInformationServer.getDocsWithUncleanContent(SolrInformationServer.java:722)
        at org.alfresco.solr.tracker.ContentTracker.doTrack(ContentTracker.java:81)
        at org.alfresco.solr.tracker.AbstractTracker.track(AbstractTracker.java:190)

I checked again those folders, but for some reason indexes are mising, the Solr didn't rebuilt them.

Solution

These are 4 removes I use to do when a made a FULL-REINDEX. Don't do all of them if you only need a simple reindex. Before doing this actions please read heiko-robert comments to know better what actions are you performing and if you really want them.

You did 3 of them.

This one is OK:

rm -rf /opt/alfresco/alf_data/solr4/model/*

I use to remove index folder too:

rm -rf /opt/alfresco/alf_data/solr4/index/workspace/SpacesStore/*
rm -rf /opt/alfresco/alf_data/solr4/index/archive/SpacesStore/*

You forgot this one, solr 4 contents:

rm -rf /opt/alfresco/alf_data/solr4/content/*