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Common Issues with Solr Data Import Handler (DIH)

1. Could not load driver: org.postgresql.Driver

org.apache.solr.common.SolrException; Full Import failed:java.lang.RuntimeException: java.lang.RuntimeException: 
org.apache.solr.handler.dataimport.DataImportHandlerException: Could not load driver: org.postgresql.Driver

Solution :

Put rmdbs driver, in my case postgres driver in $SOLR_HOME/dist folder and point it in solrconfig.xml

<lib dir="${solr.install.dir:../../../..}/dist/" regex="postgresql.*\.jar" />

 2. 
ERROR StreamingSolrClients
org.apache.solr.common.SolrException: Bad Request

request: http://host:7574/solr/collection_shard2_replica1/update?update.distrib=TOLEADER&distrib.from=http%3A%2F%2Fhost%3A8983%2Fsolr%2Fcollection_shard1_replica2%2F&wt=javabin&version=2
 at org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrClient$Runner.run(ConcurrentUpdateSolrClient.java:241)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
 at java.lang.Thread.run(Thread.java:744)
Solution :

Issue is mainly due to fields not properly added in schema.xml. Also make sure required fields are proper. I faced issue where my table did not have id field and I forgot to remove it from schema.xml where its a required field


 3. WARN DistributedUpdateProcessor
WARN DistributedUpdateProcessor Error sending update to http://host:7574/solr
org.apache.solr.common.SolrException: Bad Request

request: http://host:7574/solr/collection_shard2_replica1/update?update.distrib=TOLEADER&distrib.from=http%3A%2F%2Fhost%3A8983%2Fsolr%2Fcollection_shard1_replica2%2F&wt=javabin&version=2
 at org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrClient$Runner.run(ConcurrentUpdateSolrClient.java:241)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
 at java.lang.Thread.run(Thread.java:744)
Solution :

Same as 2



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