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From "David Webb (Commented) (JIRA)" <>
Subject [jira] [Commented] (SOLR-2233) DataImportHandler - JdbcDataSource is not thread safe
Date Fri, 30 Dec 2011 14:13:30 GMT


David Webb commented on SOLR-2233:

I am getting truly poor performance with my multi-threaded DIH Using the JdbcDataSource. 
This issue sounds like my problem considering I can only see 1 new active session made on
the Oracle Database, even though threads="12".  I am running Solr 3.4, but there is no Fix
Version associated with this Jira, so does that mean this patch never got commited?

Any other suggestions for Solr 3.4 DIH Multithreaded?

Thank you.
> DataImportHandler - JdbcDataSource is not thread safe
> -----------------------------------------------------
>                 Key: SOLR-2233
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>          Components: contrib - DataImportHandler
>    Affects Versions: 1.4, 1.4.1, 1.5, 3.1, 3.2
>            Reporter: Fuad Efendi
>         Attachments: SOLR-2233-001.patch, SOLR-2233-JdbcDataSource.patch, SOLR-2233.patch,
> Whenever Thread A spends more than 10 seconds on a Connection (by retrieving records
in a batch), Thread B will close connection.
> Related exceptions happen when we use "threads=" attribute for entity; usually exception
stack contains message "connection already closed"
> It shouldn't happen with some JNDI data source, where Connection.close() simply returns
Connection to a pool of available connections, but we might get different errors.

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