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https://issues.apache.org/jira/browse/DERBY-6396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13807761#comment-13807761
]
Knut Anders Hatlen commented on DERBY-6396:
-------------------------------------------
I'm able to reproduce this by doing "chmod 000" on the database's tmp directory
before booting the database.
{noformat}
java.lang.NullPointerException
at org.apache.derby.impl.io.DirFile.deleteAll(Unknown Source)
at org.apache.derby.impl.io.BaseStorageFactory.createTempDir(Unknown
Source)
at org.apache.derby.impl.io.DirStorageFactory.doInit(Unknown Source)
at org.apache.derby.impl.io.BaseStorageFactory.init(Unknown Source)
at
org.apache.derby.impl.services.monitor.StorageFactoryService.privGetStorageFactoryInstance(Unknown
Source)
at
org.apache.derby.impl.services.monitor.StorageFactoryService.access$400(Unknown
Source)
at
org.apache.derby.impl.services.monitor.StorageFactoryService$3.run(Unknown
Source)
at java.security.AccessController.doPrivileged(Native Method)
at
org.apache.derby.impl.services.monitor.StorageFactoryService.getStorageFactoryInstance(Unknown
Source)
at
org.apache.derby.impl.store.raw.data.BaseDataFileFactory.boot(Unknown Source)
{noformat}
> NullPointerException in DirFile
> -------------------------------
>
> Key: DERBY-6396
> URL: https://issues.apache.org/jira/browse/DERBY-6396
> Project: Derby
> Issue Type: Bug
> Components: Miscellaneous
> Affects Versions: 10.10.1.1
> Environment: Windows 7
> Reporter: Fabian Depry
>
> We got a NullPointerException trying to start a Derby database in embedded
> mode; the stacktrace indicated it happened in
> org.apache.derby.impl.io.DirFile.deleteAll(); that method got called from
> org.apache.derby.impl.io.BaseStorageFactory.createTempDir().
> After investigating, it appears that the deleteAll() method calls
> "super.list()", which according to the java.io.File specifications, can
> return null. But the deleteAll() method doesn't handle that case gracefully.
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