DataImportHandler creates multiple DB connections during a delta update
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Key: SOLR-2006
URL: https://issues.apache.org/jira/browse/SOLR-2006
Project: Solr
Issue Type: Improvement
Components: contrib - DataImportHandler
Affects Versions: 1.4.1, 1.4, 3.1, 4.0
Reporter: Lance Norskog
The DataImportHandler code for delta updates creates a separate copy of each
datasource for each entity in the document. This creates a separate JDBC
connection for each entity. In some relational databases, connections are a
heavyweight resource and their use should be limited.
A JDBC pool would help avoid this problem, and also assist in doing
multi-threaded DIH indexing jobs.
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