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https://issues.apache.org/jira/browse/CASSANDRA-10649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14991971#comment-14991971
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Michael Shuler commented on CASSANDRA-10649:
--------------------------------------------

In the attached cassandra.yaml file (is that your exact config?) there is an 
incorrectly (commented in attached file) spaced sub-config line {{#enabled: 
true}} at the beginning of the line after {{client_encryption_options:}} - this 
should have several spaces at the beginning of the line.

I would suggest downloading a fresh copy of a stock default cassandra.yaml file 
and carefully reviewing a diff of your changes.

2.1.11:
https://raw.githubusercontent.com/apache/cassandra/cassandra-2.1.11/conf/cassandra.yaml

2.1 branch HEAD:
https://raw.githubusercontent.com/apache/cassandra/cassandra-2.1/conf/cassandra.yaml

> Cassandra 2.1 start failed with exception:Exception encountered during startup
> ------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-10649
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10649
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Configuration
>         Environment: Linux: Fedora-16 64 bit
>            Reporter: sandeep thakur
>             Fix For: 2.1.x
>
>         Attachments: cassandra.yaml
>
>
> I am trying to setup cassandra single node cluster. i've downloaded below 
> build:
> apache-cassandra-2.1.11-bin.tar.gz
> I've upgraded Java to 1.8 as well, as earlier it was throwing errors related 
> to Java version.
> {code}
> [root@localhost cassandra]# java -version
> java version "1.8.0_60"
> Java(TM) SE Runtime Environment (build 1.8.0_60-b27)
> Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)
> {code}
> I've also verified the cassandra.yaml file from "http://www.yamllint.com/"; as 
> well. But while starting cassandra, I am getting vague exception as below:
> {code}
> INFO  15:52:11 Compacting 
> [SSTableReader(path='/home/sandeep/bck_up/data/cassandra/data/system/local-7ad54392bcdd35a684174e047860b377/system-local-ka-18-Data.db'),
>  
> SSTableReader(path='/home/sandeep/bck_up/data/cassandra/data/system/local-7ad54392bcdd35a684174e047860b377/system-local-ka-17-Data.db'),
>  
> SSTableReader(path='/home/sandeep/bck_up/data/cassandra/data/system/local-7ad54392bcdd35a684174e047860b377/system-local-ka-20-Data.db'),
>  
> SSTableReader(path='/home/sandeep/bck_up/data/cassandra/data/system/local-7ad54392bcdd35a684174e047860b377/system-local-ka-19-Data.db')]
> INFO  15:52:11 Node localhost/127.0.0.1 state jump to normal
> INFO  15:52:11 Netty using native Epoll event loop
> ERROR 15:52:11 Exception encountered during startup
> java.lang.NullPointerException: null
>         at org.apache.cassandra.transport.Server.run(Server.java:171) 
> ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at org.apache.cassandra.transport.Server.start(Server.java:117) 
> ~[apache-cassandra-2.1.11.jar:2.1.11]
>         at 
> org.apache.cassandra.service.CassandraDaemon.start(CassandraDaemon.java:492) 
> [apache-cassandra-2.1.11.jar:2.1.11]
>         at 
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:575)
>  [apache-cassandra-2.1.11.jar:2.1.11]
>         at 
> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:651) 
> [apache-cassandra-2.1.11.jar:2.1.11]
> java.lang.NullPointerException
>         at org.apache.cassandra.transport.Server.run(Server.java:171)
>         at org.apache.cassandra.transport.Server.start(Server.java:117)
>         at 
> org.apache.cassandra.service.CassandraDaemon.start(CassandraDaemon.java:492)
>         at 
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:575)
>         at 
> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:651)
> Exception encountered during startup: null
> INFO  15:52:11 Announcing shutdown
> INFO  15:52:11 Node localhost/127.0.0.1 state jump to normal
> INFO  15:52:11 Compacted 4 sstables to 
> [/home/sandeep/bck_up/data/cassandra/data/system/local-7ad54392bcdd35a684174e047860b377/system-local-ka-21,].
>   11,427 bytes to 5,749 (~50% of original) in 199ms = 0.027551MB/s.  4 total 
> partitions merged to 1.  Partition merge counts were {4:1, }
> INFO  15:52:13 Waiting for messaging service to quiesce
> INFO  15:52:13 MessagingService has terminated the accept() thread
> [root@localhost server]#
> {code}
> I've also posted the issue on stack overflow as well:
> http://stackoverflow.com/questions/33514745/cassandra-startup-failed-with-exception-exception-encountered-during-startup
> Request some one to assist on this issue.



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