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Posted to user@cassandra.apache.org by John Lennard <jo...@gravitate.co.nz> on 2011/04/25 14:52:23 UTC
JNA C library errors on OSX
Hi,
I am currently testing the current 0.8 beta on my OSX development machine and when cassandra is starting up i am seeing errors from the JNA code as below.
john@balorama bin $ sudo -u cassandra ./cassandra -f
Password:
INFO 00:04:18,013 Logging initialized
INFO 00:04:18,027 Heap size: 2126512128/2126512128
INFO 00:04:18,078 Unable to link C library. Native methods will be disabled.
...
From here Cassandra continues to run, however, without native method support.
I have tested running Cassandra as root, the logged in user and the cassandra user along with the most recent JNA and a version compiled from trunk. I have also tried running cassandra with out any of the start up scripts and still the same error, simple tests where by i have removed the CLibrary class and code that causes the fault seem to allow the c library to be linked.
I am about to build a version from source to add in some stack traces where the error is handled but was wondering if anyone else has seen this.
Thanks
John
Re: JNA C library errors on OSX
Posted by John Lennard <jo...@gravitate.co.nz>.
Thanks for that.
If it is a known issue I will leave it be as everything is working fine without it. Have no intention of deploying on OSX, was more that seeing the error puzzled me some what.
Cheers
John
On 26/04/2011, at 2:05 AM, Jonathan Ellis wrote:
> Pretty sure this is b/c OS X doesn't support posix_fadvise.
>
> Since you shouldn't be running OS X as a server OS in production
> anyway, I wouldn't worry much. Cassandra will still work fine for
> development w/o native methods.
>
> On Mon, Apr 25, 2011 at 7:52 AM, John Lennard <jo...@gravitate.co.nz> wrote:
>> Hi,
>>
>> I am currently testing the current 0.8 beta on my OSX development machine and when cassandra is starting up i am seeing errors from the JNA code as below.
>>
>>
>> john@balorama bin $ sudo -u cassandra ./cassandra -f
>> Password:
>> INFO 00:04:18,013 Logging initialized
>> INFO 00:04:18,027 Heap size: 2126512128/2126512128
>> INFO 00:04:18,078 Unable to link C library. Native methods will be disabled.
>>
>> ...
>>
>> From here Cassandra continues to run, however, without native method support.
>>
>>
>> I have tested running Cassandra as root, the logged in user and the cassandra user along with the most recent JNA and a version compiled from trunk. I have also tried running cassandra with out any of the start up scripts and still the same error, simple tests where by i have removed the CLibrary class and code that causes the fault seem to allow the c library to be linked.
>>
>> I am about to build a version from source to add in some stack traces where the error is handled but was wondering if anyone else has seen this.
>>
>>
>> Thanks
>> John
>>
>>
>>
>>
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
Re: JNA C library errors on OSX
Posted by Jonathan Ellis <jb...@gmail.com>.
Pretty sure this is b/c OS X doesn't support posix_fadvise.
Since you shouldn't be running OS X as a server OS in production
anyway, I wouldn't worry much. Cassandra will still work fine for
development w/o native methods.
On Mon, Apr 25, 2011 at 7:52 AM, John Lennard <jo...@gravitate.co.nz> wrote:
> Hi,
>
> I am currently testing the current 0.8 beta on my OSX development machine and when cassandra is starting up i am seeing errors from the JNA code as below.
>
>
> john@balorama bin $ sudo -u cassandra ./cassandra -f
> Password:
> INFO 00:04:18,013 Logging initialized
> INFO 00:04:18,027 Heap size: 2126512128/2126512128
> INFO 00:04:18,078 Unable to link C library. Native methods will be disabled.
>
> ...
>
> From here Cassandra continues to run, however, without native method support.
>
>
> I have tested running Cassandra as root, the logged in user and the cassandra user along with the most recent JNA and a version compiled from trunk. I have also tried running cassandra with out any of the start up scripts and still the same error, simple tests where by i have removed the CLibrary class and code that causes the fault seem to allow the c library to be linked.
>
> I am about to build a version from source to add in some stack traces where the error is handled but was wondering if anyone else has seen this.
>
>
> Thanks
> John
>
>
>
>
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com