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From "Jonathan Ellis (JIRA)" <>
Subject [jira] Commented: (CASSANDRA-1377) NPE aborts streaming operations for keyspaces with hyphens ('-') in their names
Date Mon, 23 Aug 2010 19:12:16 GMT


Jonathan Ellis commented on CASSANDRA-1377:

We really need some "reserved" characters in keyspace/CF names.  You can make a case that
restricting them to \w is going too far in the other direction, but hyphens have always been
reserved, and letting them pass in keyspaces was definitely a bug that was going to bite us
(see: this issue).

> NPE aborts streaming operations for keyspaces with hyphens ('-') in their names
> -------------------------------------------------------------------------------
>                 Key: CASSANDRA-1377
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.6.3
>            Reporter: Ben Hoyt
>            Assignee: Gary Dusbabek
>             Fix For: 0.6.5, 0.7 beta 2
>         Attachments: 1377-0.6.txt, v1-0001-disallow-invalid-ks-cf-names.txt
> When streaming starts for operations such as repair or bootstrap, it will fail due to
an NPE if they rows are in a keyspace that has a hyphen in its name.  One workaround for this
issue would be to not use keyspace names containing hyphens.  It would be even nicer if streaming
worked for keyspace names with hyphens, since keyspaces named like that seem to be fine in
all other ways.
> To reproduce:
>  1. With a multi-node ring, load up a keyspace with a hyphen in its name
>  2. Add some data to that keyspace
>  3. nodetool repair
> Expected results:
> Repair operations complete normally
> Actual results:
> Repair operations don't complete normally.  The stacktrace below is correlated with the
repair request.  
>  INFO [AE-SERVICE-STAGE:1] 2010-06-30 14:11:29,744 (line 619)
Performing streaming repair of 1 ranges to / for (my-keyspace,AColumnFamily)
> ERROR [MESSAGE-DESERIALIZER-POOL:1] 2010-06-30 14:11:30,034
(line 101) Error in ThreadPoolExecutor
> java.lang.NullPointerException
>         at org.apache.cassandra.streaming.StreamInitiateVerbHandler.getNewNames(
>         at org.apache.cassandra.streaming.StreamInitiateVerbHandler.doVerb(
>         at
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(
>         at java.util.concurrent.ThreadPoolExecutor$
>         at

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