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https://issues.apache.org/jira/browse/CASSANDRA-1654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12976334#action_12976334
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Matthew F. Dennis commented on CASSANDRA-1654:
----------------------------------------------
doesn't appear to work on EC2
{noformat}
INFO 19:02:09,673 EC2Snitch using region: us-east, zone: 1d.
ERROR 19:02:09,762 Exception encountered during startup.
java.lang.ExceptionInInitializerError
at
org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:100)
at
org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:54)
at
org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:240)
at
org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:133)
Caused by: java.lang.RuntimeException: java.lang.NullPointerException
at
org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescriptor.java:424)
... 4 more
Caused by: java.lang.NullPointerException
at
java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768)
at
org.apache.cassandra.gms.Gossiper.addLocalApplicationState(Gossiper.java:877)
at
org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescriptor.java:300)
... 4 more
Exception encountered during startup.
Heap
par new generation total 38336K, used 14355K [0x00007fa51eb10000,
0x00007fa5214a0000, 0x00007fa5214a0000)
eden space 34112K, 42% used [0x00007fa51eb10000, 0x00007fa51f914d08,
0x00007fa520c60000)
from space 4224K, 0% used [0x00007fa520c60000, 0x00007fa520c60000,
0x00007fa521080000)
to space 4224K, 0% used [0x00007fa521080000, 0x00007fa521080000,
0x00007fa5214a0000)
concurrent mark-sweep generation total 4151744K, used 0K [0x00007fa5214a0000,
0x00007fa61eb10000, 0x00007fa61eb10000)
concurrent-mark-sweep perm gen total 21248K, used 10733K [0x00007fa61eb10000,
0x00007fa61ffd0000, 0x00007fa623f10000)
{noformat}
> EC2Snitch
> ---------
>
> Key: CASSANDRA-1654
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1654
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Brandon Williams
> Fix For: 0.7.1
>
> Attachments: 1654-incomplete.txt, 1654-v2.txt, 1654.txt
>
>
> This will be a snitch extending AbstractNetworkTopologySnitch that pulls DC
> from instance metadata placement_availability_zone.
> I don't think we can get rack information so the choice is between picking
> something unique-per-machine to be the rack or assigning everything in the DC
> the same rack. Second seems easier, so let's use placement_availability_zone
> for rack, too.
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