[jira] [Updated] (CASSANDRA-8544) Cassandra could not start with NPE in ColumnFamilyStore.removeUnfinishedCompactionLeftovers

["Joshua McKenzie (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-8544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joshua McKenzie updated CASSANDRA-8544:
---------------------------------------
    Attachment: 8544_v1.txt

If turning off AV and Windows Search consistently fixes this I consider this an external/environment problem and not a problem with our code-base w/regards to stopping.  Pre 3.0 (and w/memory-mapped I/O when we go back down that route), file sharing violations like this from outside programs are, by default, a problem we're going to stop the database for rather than allowing failed deletions to potentially fill a drive on a node.  If you'd prefer to allow the system to continue you can reference the following: [one|http://www.datastax.com/documentation/cassandra/2.0/cassandra/configuration/configCassandra_yaml_r.html] - [two|http://www.datastax.com/dev/blog/handling-disk-failures-in-cassandra-1-2].

At the very least, you need to exclude your cassandra data and logs folder from AV scanning and also [remove it from indexing|http://windows.microsoft.com/en-us/windows/improve-windows-searches-using-index-faq#1TC=windows-7].

Attaching a v1 that wraps the NPE and instead throws an FSReadError and points to log file for more information, since our original NPE error isn't terribly useful.

> Cassandra could not start with NPE in ColumnFamilyStore.removeUnfinishedCompactionLeftovers
> -------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-8544
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8544
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: Windows
>            Reporter: Leonid Shalupov
>            Assignee: Joshua McKenzie
>              Labels: windows
>             Fix For: 2.1.3
>
>         Attachments: 8544_show_npe.txt, 8544_v1.txt
>
>
> It happens sometimes after restarts caused by undeletable files under Windows.
> {quote}
> Caused by: java.lang.NullPointerException
>     at org.apache.cassandra.db.ColumnFamilyStore.removeUnfinishedCompactionLeftovers(ColumnFamilyStore.java:579)
>     at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:232)
>     at org.apache.cassandra.service.CassandraDaemon.init(CassandraDaemon.java:377)
>     at com.jetbrains.cassandra.service.CassandraServiceMain.start(CassandraServiceMain.java:81)
>     ... 6 more
> {quote}



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