[
https://issues.apache.org/jira/browse/SOLR-2233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12931187#action_12931187
]
Fuad Efendi commented on SOLR-2233:
-----------------------------------
This is exception I was talking about, threads="16", 12 sub-entities, with
existing trunk version, note *The connection is closed*
{code}
org.apache.solr.handler.dataimport.DataImportHandlerException:
com.microsoft.sqlserver.jdbc.SQLServerException: The connection is closed.
at
org.apache.solr.handler.dataimport.DataImportHandlerException.wrapAndThrow(DataImportHandlerException.java:64)
at
org.apache.solr.handler.dataimport.JdbcDataSource$ResultSetIterator.hasnext(JdbcDataSource.java:337)
at
org.apache.solr.handler.dataimport.JdbcDataSource$ResultSetIterator.access$600(JdbcDataSource.java:226)
at
org.apache.solr.handler.dataimport.JdbcDataSource$ResultSetIterator$1.hasNext(JdbcDataSource.java:260)
at
org.apache.solr.handler.dataimport.EntityProcessorBase.getNext(EntityProcessorBase.java:75)
at
org.apache.solr.handler.dataimport.SqlEntityProcessor.nextRow(SqlEntityProcessor.java:73)
at
org.apache.solr.handler.dataimport.ThreadedEntityProcessorWrapper.nextRow(ThreadedEntityProcessorWrapper.java:84)
at
org.apache.solr.handler.dataimport.DocBuilder$EntityRunner.runAThread(DocBuilder.java:433)
at
org.apache.solr.handler.dataimport.DocBuilder$EntityRunner.run(DocBuilder.java:386)
at
org.apache.solr.handler.dataimport.DocBuilder$EntityRunner.runAThread(DocBuilder.java:453)
at
org.apache.solr.handler.dataimport.DocBuilder$EntityRunner.access$000(DocBuilder.java:340)
at
org.apache.solr.handler.dataimport.DocBuilder$EntityRunner$1.run(DocBuilder.java:393)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: The connection is
closed.
at
com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:171)
at
com.microsoft.sqlserver.jdbc.SQLServerConnection.checkClosed(SQLServerConnection.java:319)
at
com.microsoft.sqlserver.jdbc.SQLServerStatement.checkClosed(SQLServerStatement.java:956)
at
com.microsoft.sqlserver.jdbc.SQLServerResultSet.checkClosed(SQLServerResultSet.java:348)
at
com.microsoft.sqlserver.jdbc.SQLServerResultSet.next(SQLServerResultSet.java:915)
at
org.apache.solr.handler.dataimport.JdbcDataSource$ResultSetIterator.hasnext(JdbcDataSource.java:329)
... 13 more
{code}
> DataImportHandler - JdbcDataSource is not thread safe
> -----------------------------------------------------
>
> Key: SOLR-2233
> URL: https://issues.apache.org/jira/browse/SOLR-2233
> Project: Solr
> Issue Type: Bug
> Affects Versions: 1.5
> Reporter: Fuad Efendi
> Attachments: FE-patch.txt, SOLR-2233-JdbcDataSource.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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