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https://issues.apache.org/jira/browse/SOLR-812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shalin Shekhar Mangar resolved SOLR-812.
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Resolution: Fixed
Fix Version/s: 1.4
Assignee: Shalin Shekhar Mangar
Committed revision 726241.
Just to re-iterate, there are no changes in default configuration except that
maxRows is set automatically if user specifies 'start' and 'rows' parameter.
Read-only mode has to be enabled explictly and then sane defaults for
auto-commit, isolation and holdability are added. We can add readOnly flag to
our example configurations on the wiki.
Thanks David and Glen!
> JDBC optimizations: setReadOnly, setMaxRows
> -------------------------------------------
>
> Key: SOLR-812
> URL: https://issues.apache.org/jira/browse/SOLR-812
> Project: Solr
> Issue Type: Improvement
> Components: contrib - DataImportHandler
> Affects Versions: 1.3
> Reporter: David Smiley
> Assignee: Shalin Shekhar Mangar
> Fix For: 1.4
>
> Attachments: SOLR-812.patch, SOLR-812.patch
>
>
> I'm looking at the DataImport code as of Solr v1.3 and using it with Postgres
> and very large data sets and there some improvement suggestions I have.
> 1. call setReadOnly(true) on the connection. DIH doesn't change the data so
> this is obvious.
> 2. call setAutoCommit(false) on the connection. (this is needed by Postgres
> to ensure that the fetchSize hint actually works)
> 3. call setMaxRows(X) on the statement which is to be used when the
> dataimport.jsp debugger is only grabbing X rows. fetchSize is just a hint
> and alone it isn't sufficient.
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