Hi All,
While working on a migration project from Solr 4 to Solr 6, I need to reindex
my data using Solr map reduce Indexer tool in offline mode with avro data.
While executing the map reduce indexer tool shipped with solr 6.2.1, it is
throwing error of cannot create core with empty name value. The solr instances
are running fine with new indexed are being added and modified correctly. Below
is the command that was being fired:
hadoop --config /etc/hadoop/conf jar
/home/impadmin/solr-6.2.1/dist/solr-map-reduce-*.jar -D
'mapred.child.java.opts=-Xmx500m' \
-libjars `echo /home/impadmin/solr6lib/*.jar | sed 's/ /,/g'`
--morphline-file /home/impadmin/app_quotes_morphline_actual.conf \
--zk-host 172.26.45.71:9984 --output-dir
hdfs://impetus-i0056.impetus.co.in:8020/user/impadmin/MapReduceIndexerTool/output5
\
--collection app.quotes --log4j src/test/resources/log4j.properties
--verbose \
"hdfs://impetus-i0056.impetus.co.in:8020/user/impadmin/MapReduceIndexerTool/5d63e0f8-afc1-483e-bd3f-d508c885d794-000000"
Below is the complete snapshot of error trace:
Failed to initialize record writer for
org.apache.solr.hadoop.MapReduceIndexerTool/MorphlineMapper,
attempt_1479795440861_0343_r_000000_0
at org.apache.solr.hadoop.SolrRecordWriter.<init>(SolrRecordWriter.java:128)
at
org.apache.solr.hadoop.SolrOutputFormat.getRecordWriter(SolrOutputFormat.java:163)
at
org.apache.hadoop.mapred.ReduceTask$NewTrackingRecordWriter.<init>(ReduceTask.java:540)
at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:614)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:389)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1709)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
Caused by: org.apache.solr.common.SolrException: Cannot create core with empty
name value
at
org.apache.solr.core.CoreDescriptor.checkPropertyIsNotEmpty(CoreDescriptor.java:280)
at org.apache.solr.core.CoreDescriptor.<init>(CoreDescriptor.java:191)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:754)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:742)
at
org.apache.solr.hadoop.SolrRecordWriter.createEmbeddedSolrServer(SolrRecordWriter.java:163)
at
org.apache.solr.hadoop.SolrRecordWriter.<init>(SolrRecordWriter.java:121) ... 9
more
Additional points to note:
* The solrconfig and schema files are copied as is from Solr 4.
* Once collection is deployed, user can perform all operations on the
collection without any issue.
* The indexation process is working fine with the same tool on Solr 4.
Please help.
Thanks,
Manan Sheth
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