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https://issues.apache.org/jira/browse/FELIX-902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12668468#action_12668468
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Pavel Tiunov commented on FELIX-902:
------------------------------------

Yes, you are completely right. The fix is to handle empty state files. But i 
just thought that you wil be interested in root cause of problem, because it 
can bring cache into not persistent state.
P.S. And when this fix will be released? :) It's really important for us, 
because this bug reproduces very often in our environment.

> Empty bundle.state file produces NPE
> ------------------------------------
>
>                 Key: FELIX-902
>                 URL: https://issues.apache.org/jira/browse/FELIX-902
>             Project: Felix
>          Issue Type: Bug
>          Components: Framework
>    Affects Versions: felix-1.0.4
>            Reporter: Pavel Tiunov
>            Assignee: Richard S. Hall
>            Priority: Critical
>
> If I have empty bundle.state file in Felix cache then exception is thrown 
> while bundle start:
> java.lang.NullPointerException
>             at 
> org.apache.felix.framework.cache.BundleArchive.getPersistentState(BundleArchive.java:315)
>             at org.apache.felix.framework.Felix.start(Felix.java:776)
> But if i delete bundle.state then no exception is thrown and 
> org.apache.felix.framework.cache.BundleArchive#getPersistentState returns 
> 'Installed' state.
> The exception is thrown because string comparsions in 
> org.apache.felix.framework.cache.BundleArchive#getPersistentState do not 
> respect java.io.BufferedReader#readLine's null return value if file is empty. 
> Also there is a bug in 
> org.apache.felix.framework.cache.BundleArchive#setPersistentState that can 
> produce not persistent state of cache by creation of empty bundle.state file.

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