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From "Stefania (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-13389) Possible NPE on upgrade to 3.0/3.X in case of IO errors
Date Wed, 29 Mar 2017 01:53:41 GMT
Stefania created CASSANDRA-13389:
------------------------------------

             Summary: 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.x, 3.11.x


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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