question Re: Solr DataImporter class not found in Archives of Support Questions (Read Only)

Solr DataImporter class not found

ganeshkumarj — Fri, 16 Sep 2022 11:58:15 GMT

CDH version : 5.9.2

solr version : 4.10.3

I am trying to import Oracle table data to the Solrcloud. I am getting the error when creating the collection with the below command

solrctl --zk ${ZOOKEEPER_CONNECT} collection --create xxxx -s 2

Trace:

Caused by: java.lang.ClassNotFoundException: org.apache.solr.handler.dataimport.DataImportHandler

so I created the lib folder inside my core instantdir like

instantDir/lib and copied jar from the parcel folder

/data/opt/cloudera/parcels/CDH-5.9.2-1.cdh5.9.2.p0.3/jars/solr-dataimportandler*.jar

But it does not consider those folder jars when i again try to create the collection getting same error.

In solrconfig.xml i have below entry for lib tag:

when i check the solr server log i can see few warns

2017-07-24 08:15:31,421 WARN org.apache.solr.core.SolrResourceLoader: Can't find (or read) directory to add to classloader: ../lib (resolved as: /var/lib/solr/xxxx_shard1_replica1/../lib).

From my understanding the folder xxxx_shard1_replica1 must be created once the collection are successfully created.

But I don't why it is refering it that folder and throwing the error.

Re: Solr DataImporter class not found

Yuexin Zhang — Mon, 24 Jul 2017 06:54:29 GMT

How about adding a lib configuration to your solrconfig.xml? Like below:

<lib dir="/opt/cloudera/parcels/CDH/lib/solr/" regex="solr-dataimporthandler*\.jar" />

Also, the dir /var/lib/solr/xxxx_shard1_replica1 is created by solr when the node is asked to load the core, not when the collection is created.

Re: Solr DataImporter class not found

ganeshkumarj — Mon, 24 Jul 2017 07:10:48 GMT

Yuexin Zhang thank you for your reply

Your solution partially solved my problem. now the collection are created with the below error in the solrAdmin console.

org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: RequestHandler init failure

Solrconfig xml:

<requestHandler name="/dataimport" class="org.apache.solr.handler.dataimport.DataImportHandler">
<lst name="defaults">
<str name="config">db-data-config.xml</str>
</lst>
</requestHandler>

I feel like it expected the ojdbc.jar in the classpath. Since I have 5 nodes cluster should i need to copy the ojdbc.jar in all the node of the folder

/opt/cloudera/parcels/CDH/lib/solr/

Re: Solr DataImporter class not found

ganeshkumarj — Mon, 24 Jul 2017 07:44:11 GMT

I have copied the ojdbc6.jar to the path

/opt/cloudera/parcels/CDH/lib/solr/

in all 5 nodes. still getting the problem in the SolrCore Initialization Failures error in the solr admin page and also it didn't listing the created collection core in the admin page.

Error:

org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: RequestHandler init failure

Re: Solr DataImporter class not found

ganeshkumarj — Mon, 24 Jul 2017 09:08:46 GMT

Problem has been solved. the mistake is mine,previously i have given wrong driver name and url for oracle connection. I have corrected and it successully imported data from oracle.

Re: Solr DataImporter class not found

neerjakhattar — Tue, 01 Aug 2017 18:49:37 GMT

Glad the issue the resolved but try to use some other location to store those jars instead of /opt/cloudera/parcels as when you upgrade you can lose all those jars.