incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Michael Kjellman <mkjell...@barracuda.com>
Subject Re: Specifying initial token in 1.2 fails
Date Fri, 04 Jan 2013 16:53:39 GMT
To be honest I haven't run a cluster with Murmur3.

You can still use indexing with RandomPartitioner (all us "old" folk are stuck on Random btw..)

And there was a thread floating around yesterday where Edward did some benchmarks and found
that Murmur3 was actually slower than RandomPartitioner.

http://www.mail-archive.com/user@cassandra.apache.org/msg26789.html<http://permalink.gmane.org/gmane.comp.db.cassandra.user/30182>

I do know that with vnodes token allocation is now 100% dynamic so no need to manually assign
tokens to nodes anymore.

Best,
michael

From: Dwight Smith <Dwight.Smith@genesyslab.com<mailto:Dwight.Smith@genesyslab.com>>
Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Date: Friday, January 4, 2013 8:48 AM
To: "'user@cassandra.apache.org<mailto:'user@cassandra.apache.org>'" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Subject: RE: Specifying initial token in 1.2 fails

Michael

Yes indeed – my mistake.  Thanks.  I can specify RandomPartitioner, since I do not use indexing
– yet.

Just for informational purposes – with Murmur3 - to achieve a balanced cluster – is the
initial token method supported?
If so – how should these be generated, the token-generator seems to only apply to RandomPartitioner.

Thanks again

From: Michael Kjellman [mailto:mkjellman@barracuda.com]
Sent: Friday, January 04, 2013 8:39 AM
To: user@cassandra.apache.org<mailto:user@cassandra.apache.org>
Subject: Re: Specifying initial token in 1.2 fails

Murmur3 != MD5 (RandomPartitioner)

From: Dwight Smith <Dwight.Smith@genesyslab.com<mailto:Dwight.Smith@genesyslab.com>>
Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Date: Friday, January 4, 2013 8:36 AM
To: "'user@cassandra.apache.org<mailto:'user@cassandra.apache.org>'" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Subject: Specifying initial token in 1.2 fails

Hi

Just started evaluating 1.2 – starting a clean Cassandra node – the usual practice is
to specify the initial token – but when I attempt to start the node the following is observed:

INFO [main] 2013-01-03 14:08:57,774 DatabaseDescriptor.java (line 203) disk_failure_policy
is stop
DEBUG [main] 2013-01-03 14:08:57,774 DatabaseDescriptor.java (line 205) page_cache_hinting
is false
INFO [main] 2013-01-03 14:08:57,774 DatabaseDescriptor.java (line 266) Global memtable threshold
is enabled at 339MB
DEBUG [main] 2013-01-03 14:08:58,008 DatabaseDescriptor.java (line 381) setting auto_bootstrap
to true
ERROR [main] 2013-01-03 14:08:58,024 DatabaseDescriptor.java (line 495) Fatal configuration
error
org.apache.cassandra.exceptions.ConfigurationException: For input string: "85070591730234615865843651857942052863"
        at org.apache.cassandra.dht.Murmur3Partitioner$1.validate(Murmur3Partitioner.java:180)
        at org.apache.cassandra.config.DatabaseDescriptor.loadYaml(DatabaseDescriptor.java:433)
        at org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescriptor.java:121)
        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:178)
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:397)
        at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:440)


This looks like a bug.

Thanks



----------------------------------
Join Barracuda Networks in the fight against hunger.
To learn how you can help in your community, please visit: http://on.fb.me/UAdL4f
  ­­

Southfield Public School students safely access the tech tools they need on and off campus
with the Barracuda Web Filter.

Quick installation and easy to use- try the Barracuda Web Filter free for 30 days: http://on.fb.me/Vj6JBd

Mime
View raw message