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https://issues.apache.org/jira/browse/SOLR-4920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14188359#comment-14188359
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Mikhail Khludnev commented on SOLR-4920:
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I face usability issue with
{code:title=JdbcDataSource.java}
141 try {
142 c = DriverManager.getConnection(url, initProps);
143 } catch (SQLException e) {
144 // DriverManager does not allow you to use a driver which is not loaded
through
145 // the class loader of the class which is trying to make the connection.
146 // This is a workaround for cases where the user puts the driver jar in
the
147 // solr.home/lib or solr.home/core/lib directories.
148 Driver d = (Driver) DocBuilder.loadClass(driver,
context.getSolrCore()).newInstance();
149 c = d.connect(url, initProps);
150 }
{code}
if I supply weird url, I've got SQLException, it's caught, then it calls c =
d.connect(url, initProps); which returns null (which is pretty valid giving the
javadoc). Then I have NPE where the connection is hit. There is no anything
about SQLException reasons in the log. Isn't it worth to raise an issue?
> DIH JdbcDataSource exception handling
> -------------------------------------
>
> Key: SOLR-4920
> URL: https://issues.apache.org/jira/browse/SOLR-4920
> Project: Solr
> Issue Type: Bug
> Components: contrib - DataImportHandler
> Affects Versions: 4.3, Trunk
> Reporter: Chris Eldredge
> Assignee: Shalin Shekhar Mangar
> Priority: Minor
> Fix For: 4.4
>
> Attachments: patch.diff
>
>
> JdbcDataSource will incorrectly suppress exceptions when retrieving a
> connection from a JNDI context and fall back to trying to use DriverManager
> to obtain a connection. This makes it impossible to troubleshoot
> misconfigured JNDI DataSource.
> Additionally, when a SQLException is thrown while initializing a connection,
> such as in setAutoCommit(), the connection will not be closed. This can cause
> a resource leak.
> A patch will be attached with unit tests that addresses both issues.
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