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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-3023) NPE in describe_ring
Date Wed, 24 Aug 2011 16:06:29 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-3023?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams updated CASSANDRA-3023:
----------------------------------------

    Attachment: 3023.txt

bq. I think "return half-broken data" is the right solution, since pre-1777 clients aren't
going to be looking for the new data anyway.

You're right, but it sure bothers my OCD :)

Trivial patch attached.

> NPE in describe_ring
> --------------------
>
>                 Key: CASSANDRA-3023
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3023
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.8.4
>            Reporter: Eric Falcao
>            Assignee: Brandon Williams
>             Fix For: 0.8.5
>
>         Attachments: 3023.txt
>
>
> Not sure how much of the following is relevant besides the stack trace, but here I go:
> I have a 2 DC, 2 node per DC cluster. DC1 had it's seed replaced but I hadn't restarted.
I upgraded to 0.8.4 in the following fashion:
> -edited seeds
> -stopped both DC1 nodes
> -upgraded jars
> -started both nodes at the same time
> The non-seed node came up first and showed the following error. Then when the seed node
came up, the error went away on the non-seed node but started occurring on the seed node:
> ERROR [pool-2-thread-15] 2011-08-12 22:32:27,438 Cassandra.java (line 3668) Internal
error processing describe_ring
> java.lang.NullPointerException
> 	at org.apache.cassandra.service.StorageService.getRangeToRpcaddressMap(StorageService.java:623)
> 	at org.apache.cassandra.thrift.CassandraServer.describe_ring(CassandraServer.java:731)
> 	at org.apache.cassandra.thrift.Cassandra$Processor$describe_ring.process(Cassandra.java:3664)
> 	at org.apache.cassandra.thrift.Brisk$Processor.process(Brisk.java:464)
> 	at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:619)

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