Mantis import into JIRA fails with NPE

Question

I try to import projects from Mantis. Some of them get imported fine, but one fails (at the first step) with an NPE:

2013-04-22 18:07:07,695 INFO - Importing: Issues
2013-04-22 18:07:07,695 INFO - ------------------------------
2013-04-22 18:07:07,695 INFO - Only new items will be imported
2013-04-22 18:07:23,112 INFO - ------------------------------
2013-04-22 18:07:23,112 INFO - Finished Importing : Issues
2013-04-22 18:07:23,112 INFO - ------------------------------
2013-04-22 18:07:23,112 ERROR - Unexpected failure occurred. Importer will stop immediately. Data maybe in an unstable state
java.lang.NullPointerException
	at org.apache.oro.text.regex.Util.substitute(Unknown Source)
	at com.atlassian.jira.util.RegexpUtils.replaceAll(RegexpUtils.java:39)
	at com.atlassian.jira.plugins.importer.imports.mantis.transformer.IssueTransformerVer118OrOlder.escapeMantisString(IssueTransformerVer118OrOlder.java:191)
	at com.atlassian.jira.plugins.importer.imports.mantis.transformer.IssueTransformerVer118OrOlder.transform(IssueTransformerVer118OrOlder.java:76)
	at com.atlassian.jira.plugins.importer.imports.mantis.transformer.IssueTransformerVer118OrOlder.transform(IssueTransformerVer118OrOlder.java:37)
	at com.atlassian.jira.plugins.importer.web.JdbcConnection.queryDb(JdbcConnection.java:164)
	at com.atlassian.jira.plugins.importer.web.JdbcConnection.queryDb(JdbcConnection.java:146)
	at com.atlassian.jira.plugins.importer.imports.mantis.MantisDataBean.getIssuesIterator(MantisDataBean.java:81)
	at com.atlassian.jira.plugins.importer.imports.importer.impl.DefaultJiraDataImporter.importIssues(DefaultJiraDataImporter.java:741)
	at com.atlassian.jira.plugins.importer.imports.importer.impl.DefaultJiraDataImporter.doImport(DefaultJiraDataImporter.java:354)
	at com.atlassian.jira.plugins.importer.imports.importer.impl.ImporterCallable.call(ImporterCallable.java:27)
	at com.atlassian.jira.plugins.importer.imports.importer.impl.ImporterCallable.call(ImporterCallable.java:16)
	at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:366)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at com.atlassian.multitenant.impl.DefaultMultiTenantManager.runForTenant(DefaultMultiTenantManager.java:61)
	at com.atlassian.multitenant.juc.MultiTenantExecutors$WrappedRunnable.run(MultiTenantExecutors.java:160)
	at com.atlassian.jira.task.ForkedThreadExecutor$ForkedRunnableDecorator.run(ForkedThreadExecutor.java:249)
	at java.lang.Thread.run(Thread.java:722)
2013-04-22 18:07:23,115 INFO - No issues need to be reindexed.

No issue gets imported. I can guess that there is some text somewhere in mantis that doesn't suit the escaper, but I can't get further.

Any idea of where I can get more info ? A fix ?

Best,

-- Hugues

Hugues de Mazan · Answer

Thanks Yilin,

My Mantis version is 1.2.8. Ticket is opened at support desk. I will keep you informed on what happens next.

Yilin · Answer

Please be aware that : JIRA Importers plugin is compatible with Mantis versions 1.1.8 to 1.2.8.

You can go to the page "Administration >> Logging & Profiling " then add the package "com.atlassian.jira.plugins.importer" with the debug level and enable the SQL dump log, try again to check whether you can get more information about the issue?

Also, I would like to encourage you open a support ticket that we can help you qucikly move forward.