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From "Stefania (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-13389) Possible NPE on upgrade to 3.0/3.X in case of IO errors
Date Thu, 30 Mar 2017 01:16:41 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-13389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15948205#comment-15948205
] 

Stefania commented on CASSANDRA-13389:
--------------------------------------

Thanks for the review. Committed to 3.0 as 849f8cd6162c4850d64581a2c4a542c677e43e0a and merged
into 3.11, then merged into trunk with {{-s ours}}.

> Possible NPE on upgrade to 3.0/3.X in case of IO errors 
> --------------------------------------------------------
>
>                 Key: CASSANDRA-13389
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13389
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Lifecycle
>            Reporter: Stefania
>            Assignee: Stefania
>             Fix For: 3.0.13, 3.11.0
>
>
> There is a NPE on upgrade to 3.0/3.X if a data directory contains directories that generate
IO errors, for example if the cassandra process does not have permission to read them.
> Here is the exception:
> {code}
> ERROR [main] 2017-03-06 16:41:30,678  CassandraDaemon.java:710 - Exception encountered
during startup
> java.lang.NullPointerException: null
> 	at org.apache.cassandra.io.util.FileUtils.delete(FileUtils.java:372) ~[cassandra-all-3.0.11.1564.jar:3.0.11.1564]
> 	at org.apache.cassandra.db.SystemKeyspace.migrateDataDirs(SystemKeyspace.java:1359)
~[cassandra-all-3.0.11.1564.jar:3.0.11.1564]
> 	at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:190) ~[cassandra-all-3.0.11.1564.jar:3.0.11.1564]
> {code}
> This is caused by {{File.listFiles()}}, which returns null in case of an IO error.



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