Restart of Solr during data import causes an empty index to be generated on
restart
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Key: SOLR-3366
URL: https://issues.apache.org/jira/browse/SOLR-3366
Project: Solr
Issue Type: Bug
Components: contrib - DataImportHandler, replication (java)
Affects Versions: 3.4
Reporter: Kevin Osborn
We use the DataImportHandler and Java replication in a fairly simple setup of a
single master and 4 slaves. We had an operating index of about 16,000
documents. The DataImportHandler is pulled periodically by an external service
using the "command=full-import&clean=false" command for a delta import.
While processing one of these commands, we did a deployment which required us
to restart the application server (Tomcat 7). So, the import was interrupted.
Prior to this deployment, the full index of 16,000 documents had been
replicated to all slaves and was working correctly.
Upon restart, the master restarted with an empty index and then this empty
index was replicated across all slaves. So, our search index was now empty.
My expected behavior was to lose any changes in the delta import (basically
prior to the commit). However, I was not expecting to lose all data. Perhaps
this is due to the fact that I am using the full-import method, even though it
is really a delta, for performance reasons? Or does the data import just put
the index in some sort of invalid state?
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