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From Andy Cobley <acob...@computing.dundee.ac.uk>
Subject Re: SnappyCompressor and Cassandra 1.1.1
Date Wed, 04 Jul 2012 09:11:05 GMT
Yes,

I've a number of (badly written I admit) blog posts at:

http://ac31004.blogspot.co.uk/

Andy

From:  aaron morton <aaron@thelastpickle.com>
Reply-To:  <user@cassandra.apache.org>
Date:  Wednesday, 4 July 2012 10:03
To:  <user@cassandra.apache.org>
Subject:  Re: SnappyCompressor and Cassandra 1.1.1

Andy, 
>>> I'm running Cassandra on Raspberry Pi (for educational reason) and have

Have you written about your experiences anywhere ?

Cheers

-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com

On 3/07/2012, at 3:02 AM, Andy Cobley wrote:

> I've tested this and added a not to issue 4400.  Hopefully that¹s the
> correct thing to do.
> 
> Andy
> 
> On 02/07/2012 08:13, "Sylvain Lebresne" <sylvain@datastax.com> wrote:
> 
>> Yeah, we tried to catch when Snappy couldn't load (and deactivate it
>> when that happens) but apparently we've missed a few of the exceptions
>> that can be thrown in that case. I've created
>> https://issues.apache.org/jira/browse/CASSANDRA-4400 to fix that. If
>> you could try the patch on that issue and check it works for you that
>> would be awesome since I don't have a Raspberry Pi myself to test.
>> 
>> --
>> Sylvain
>> 
>> On Sun, Jul 1, 2012 at 3:26 PM, Andy Cobley
>> <acobley@computing.dundee.ac.uk> wrote:
>>> I'm running Cassandra on Raspberry Pi (for educational reason) and have
>>> been successfully running 1.1.0 for some time.  However there is no
>>> native build of SnappyCompressor for the platform (I'm currently working
>>> n rectifying that if I can) so that compression is unavailable.  When I
>>> try and start 1.1.1 on the platform I'm getting the following error
>>> which looks to me like 1.1.1 is trying to load snappy compressor at
>>> startup and falls over when to can't find it.  Thats not been the case
>>> with 1.1.0:
>>> 
>>> INFO 14:22:07,600 Global memtable threshold is enabled at 35MB
>>> java.lang.reflect.InvocationTargetException
>>>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>         at 
>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java
>>> :57)
>>>         at 
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI
>>> mpl.java:43)
>>>         at java.lang.reflect.Method.invoke(Method.java:616)
>>>         at 
>>> org.xerial.snappy.SnappyLoader.loadNativeLibrary(SnappyLoader.java:317)
>>>         at org.xerial.snappy.SnappyLoader.load(SnappyLoader.java:219)
>>>         at org.xerial.snappy.Snappy.<clinit>(Snappy.java:44)
>>>         at 
>>> org.apache.cassandra.io.compress.SnappyCompressor.create(SnappyCompressor
>>> .java:45)
>>>         at 
>>> org.apache.cassandra.io.compress.SnappyCompressor.isAvailable(SnappyCompr
>>> essor.java:55)
>>>         at 
>>> org.apache.cassandra.io.compress.SnappyCompressor.<clinit>(SnappyCompress
>>> or.java:37)
>>>         at 
>>> org.apache.cassandra.config.CFMetaData.<clinit>(CFMetaData.java:76)
>>>         at 
>>> org.apache.cassandra.config.KSMetaData.systemKeyspace(KSMetaData.java:79)
>>>         at 
>>> org.apache.cassandra.config.DatabaseDescriptor.loadYaml(DatabaseDescripto
>>> r.java:439)
>>>         at 
>>> org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescripto
>>> r.java:118)
>>>         at 
>>> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassan
>>> draDaemon.java:126)
>>>         at 
>>> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCas
>>> sandraDaemon.java:353)
>>>         at 
>>> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:106
>>> )
>>> Caused by: java.lang.UnsatisfiedLinkError: no snappyjava in
>>> java.library.path
>>>         at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1681)
>>>         at java.lang.Runtime.loadLibrary0(Runtime.java:840)
>>>         at java.lang.System.loadLibrary(System.java:1047)
>>>         at 
>>> org.xerial.snappy.SnappyNativeLoader.loadLibrary(SnappyNativeLoader.java:
>>> 52)
>>>         ... 17 more
>>> ERROR 14:22:09,934 Exception encountered during startup
>>> org.xerial.snappy.SnappyError: [FAILED_TO_LOAD_NATIVE_LIBRARY] null
>>>         at org.xerial.snappy.SnappyLoader.load(SnappyLoader.java:229)
>>>         at org.xerial.snappy.Snappy.<clinit>(Snappy.java:44)
>>>         at 
>>> org.apache.cassandra.io.compress.SnappyCompressor.create(SnappyCompressor
>>> .java:45)
>>>         at 
>>> org.apache.cassandra.io.compress.SnappyCompressor.isAvailable(SnappyCompr
>>> essor.java:55)
>>>         at 
>>> org.apache.cassandra.io.compress.SnappyCompressor.<clinit>(SnappyCompress
>>> or.java:37)
>>>         at 
>>> org.apache.cassandra.config.CFMetaData.<clinit>(CFMetaData.java:76)
>>>         at 
>>> org.apache.cassandra.config.KSMetaData.systemKeyspace(KSMetaData.java:79)
>>>         at 
>>> org.apache.cassandra.config.DatabaseDescriptor.loadYaml(DatabaseDescripto
>>> r.java:439)
>>>         at 
>>> org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescripto
>>> r.java:118)
>>>         at 
>>> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassan
>>> draDaemon.java:126)
>>>         at 
>>> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCas
>>> sandraDaemon.java:353)
>>>         at 
>>> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:106
>>> )
>>> org.xerial.snappy.SnappyError: [FAILED_TO_LOAD_NATIVE_LIBRARY] null
>>>         at org.xerial.snappy.SnappyLoader.load(SnappyLoader.java:229)
>>>         at org.xerial.snappy.Snappy.<clinit>(Snappy.java:44)
>>>         at 
>>> org.apache.cassandra.io.compress.SnappyCompressor.create(SnappyCompressor
>>> .java:45)
>>>         at 
>>> org.apache.cassandra.io.compress.SnappyCompressor.isAvailable(SnappyCompr
>>> essor.java:55)
>>>         at 
>>> org.apache.cassandra.io.compress.SnappyCompressor.<clinit>(SnappyCompress
>>> or.java:37)
>>>         at 
>>> org.apache.cassandra.config.CFMetaData.<clinit>(CFMetaData.java:76)
>>>         at 
>>> org.apache.cassandra.config.KSMetaData.systemKeyspace(KSMetaData.java:79)
>>>         at 
>>> org.apache.cassandra.config.DatabaseDescriptor.loadYaml(DatabaseDescripto
>>> r.java:439)
>>>         at 
>>> org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescripto
>>> r.java:118)
>>>         at 
>>> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassan
>>> draDaemon.java:126)
>>>         at 
>>> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCas
>>> sandraDaemon.java:353)
>>>         at 
>>> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:106
>>> )
>>> Exception encountered during startup: [FAILED_TO_LOAD_NATIVE_LIBRARY]
>>> null
>>> 
>>> Andy
>>> 
>>> 
>>> The University of Dundee is a Scottish Registered Charity, No. SC015096.
>>> 
>>> 
> 
> 
> 
> The University of Dundee is a Scottish Registered Charity, No. SC015096.
> 
> 




The University of Dundee is a Scottish Registered Charity, No. SC015096.



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