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https://issues.apache.org/jira/browse/CASSANDRA-12853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sven Zethelius resolved CASSANDRA-12853.
----------------------------------------
    Resolution: Invalid

Looking at our deployment, I realized the lost+found directory was not 
accessible (chown root vs cassandra), and hence the exception was saying the 
right thing.

> Regression: lost+found cause problems for cassandra
> ---------------------------------------------------
>
>                 Key: CASSANDRA-12853
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12853
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: linux (AWS image 4.4.23-31.54.amzn1.x86_64)
> DSE 5.0.3, Cassandra 3.0.9
>            Reporter: Sven Zethelius
>
> This issue was originally fixed in Cassandra 1 (CASSANDRA-1547, 
> CASSANDRA-4572), but now deploying DSE 5.0.3 its back.  If the data directory 
> includes a linux 'lost+found' directory, cassandra fails to start with the 
> below error.  This was not an issue in Cassandra 2.1.8.
> 2016-10-27 18:53:21,832 Type=ERROR Thread=main  
> Logger=org.apache.cassandra.service.CassandraDaemon Message=Unable to verify 
> sstable files on disk
> java.nio.file.AccessDeniedException: /opt/cassandra/data-d/lost+found
>       at 
> sun.nio.fs.UnixException.translateToIOException(UnixException.java:84) 
> ~[na:1.8.0_60]
>       at 
> sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102) 
> ~[na:1.8.0_60]
>       at 
> sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107) 
> ~[na:1.8.0_60]
>       at 
> sun.nio.fs.UnixFileSystemProvider.newDirectoryStream(UnixFileSystemProvider.java:427)
>  ~[na:1.8.0_60]
>       at java.nio.file.Files.newDirectoryStream(Files.java:457) ~[na:1.8.0_60]
>       at java.nio.file.FileTreeWalker.visit(FileTreeWalker.java:300) 
> ~[na:1.8.0_60]
>       at java.nio.file.FileTreeWalker.next(FileTreeWalker.java:372) 
> ~[na:1.8.0_60]
>       at java.nio.file.Files.walkFileTree(Files.java:2706) ~[na:1.8.0_60]
>       at java.nio.file.Files.walkFileTree(Files.java:2742) ~[na:1.8.0_60]
>       at 
> org.apache.cassandra.service.StartupChecks$7.execute(StartupChecks.java:273) 
> ~[cassandra-all-3.0.9.1346.jar:3.0.9.1346]
>       at 
> org.apache.cassandra.service.StartupChecks.verify(StartupChecks.java:107) 
> ~[cassandra-all-3.0.9.1346.jar:3.0.9.1346]
>       at 
> org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:175) 
> [cassandra-all-3.0.9.1346.jar:3.0.9.1346]
>       at com.datastax.bdp.server.DseDaemon.setup(DseDaemon.java:446) 
> [dse-core-5.0.3.jar:5.0.3]
>       at 
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:568)
>  [cassandra-all-3.0.9.1346.jar:3.0.9.1346]
>       at com.datastax.bdp.DseModule.main(DseModule.java:91) 
> [dse-core-5.0.3.jar:5.0.3]



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