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Posted to dev@lucene.apache.org by "Alexandre Rafalovitch (JIRA)" <ji...@apache.org> on 2016/10/24 02:02:58 UTC
[jira] [Closed] (SOLR-2006) DataImportHandler creates multiple DB
connections during a delta update
[ https://issues.apache.org/jira/browse/SOLR-2006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alexandre Rafalovitch closed SOLR-2006.
---------------------------------------
Resolution: Duplicate
This is all long gone. If a similar issue is seen against the latest DIH, a new issue can be opened with updated details.
> DataImportHandler creates multiple DB connections during a delta update
> -----------------------------------------------------------------------
>
> Key: SOLR-2006
> URL: https://issues.apache.org/jira/browse/SOLR-2006
> Project: Solr
> Issue Type: Improvement
> Components: contrib - DataImportHandler
> Affects Versions: 1.4, 1.4.1, 3.1, 4.0-ALPHA
> 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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