Debian package jna bug workaroung

2011-11-02 Thread Peter Tillotson 
see below
 * JAVA_HOME=/usr/lib/jvm/java-6-openjdk 
works

--
Reading the documentation over at Datastax
“The Debian and RPM packages of Cassandra install JNA automatically”

http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-improved-memory-and-disk-space-management


And indeed the Debian package depends on jna, and the /etc/init.d/cassandra 
looks as though in adds /usr/share/java/jna.jar to the classpath, and here is 
the but. 

If I copy or symlink jna.jar into:
 * /usr/share/cassandra
 * /usr/share/cassandra/lib
Whenever a column family initialises I get:
java.lang.NoClassDefFoundError: Could not initialize class 
org.apache.cassandra.cache.FreeableMemory


This suggests to me that:
 1) By default, for me at least, in Debian jna.jar is not on the classpath
 2) There is an additional classpath issue
     jar -tf apache-cassandra.jar | grep "FreeableMemory" succeeds

I'm running on: 
 * Ubuntu 10.04 x64
 * JAVA_HOME=/usr/lib/jvm/java-6-sun

Full stack traces:
java.lang.NoClassDefFoundError: Could not initialize class com.sun.jna.Native

        at com.sun.jna.Pointer.(Pointer.java:42)
        at 
org.apache.cassandra.cache.SerializingCache.serialize(SerializingCache.java:92)
        at 
org.apache.cassandra.cache.SerializingCache.put(SerializingCache.java:154)
        at 
org.apache.cassandra.cache.InstrumentingCache.put(InstrumentingCache.java:63)
        at 
org.apache.cassandra.db.ColumnFamilyStore.cacheRow(ColumnFamilyStore.java:1150)
        at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1174)
        at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131)
        at org.apache.cassandra.db.Table.getRow(Table.java:378)
        at 
org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
        at 
org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:797)
        at 
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1265)
        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:662)
 INFO [pool-1-thread-1] 2011-11-02 10:26:46,738 Memtable.java (line 177) 
CFS(Keyspace='BigSet', ColumnFamily='theKeys') liveRatio is 18.20062753783684 
(just-counted was 16.960966424636872).  calculation took 408ms for 8169 columns
ERROR [ReadStage:33] 2011-11-02 10:26:56,599 AbstractCassandraDaemon.java (line 
133) Fatal exception in thread Thread[ReadStage:33,5,main]
java.lang.NoClassDefFoundError: Could not initialize class 
org.apache.cassandra.cache.FreeableMemory
        at 
org.apache.cassandra.cache.SerializingCache.serialize(SerializingCache.java:92)
        at 
org.apache.cassandra.cache.SerializingCache.put(SerializingCache.java:154)
        at 
org.apache.cassandra.cache.InstrumentingCache.put(InstrumentingCache.java:63)
        at 
org.apache.cassandra.db.ColumnFamilyStore.cacheRow(ColumnFamilyStore.java:1150)
        at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1174)
        at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131)
        at org.apache.cassandra.db.Table.getRow(Table.java:378)
        at 
org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
        at 
org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:797)
        at 
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1265)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

Re: Debian package jna bug workaroung

2011-11-03 Thread paul cannon 
I can't reproduce this. What version of the cassandra deb are you using,
exactly, and why are you symlinking or copying jna.jar into
/usr/share/cassandra?  The initscript should be adding
/usr/sahre/java/jna.jar to the classpath, and that should be all you need.

The failure you see with o.a.c.cache.FreeableMemory is not because the jre
can't find the class, it's just that it can't initialize the class (because
it needs JNA, and it can't find JNA).

p

On Wed, Nov 2, 2011 at 4:42 AM, Peter Tillotson wrote:

> see below
>  * JAVA_HOME=/usr/lib/jvm/java-6-openjdk
> works
> --
> Reading the documentation over at Datastax
> “The Debian and RPM packages of Cassandra install JNA automatically”
>
> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-improved-memory-and-disk-space-management
>
> And indeed the Debian package depends on jna, and the
> /etc/init.d/cassandra looks as though in adds /usr/share/java/jna.jar to
> the classpath, and here is the but.
>
> If I copy or symlink jna.jar into:
>  * /usr/share/cassandra
>  * /usr/share/cassandra/lib
> Whenever a column family initialises I get:
> java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.cassandra.cache.FreeableMemory
>
> This suggests to me that:
>  1) By default, for me at least, in Debian jna.jar is not on the classpath
>  2) There is an additional classpath issue
>  jar -tf apache-cassandra.jar | grep "FreeableMemory" succeeds
>
> I'm running on:
>  * Ubuntu 10.04 x64
>  * JAVA_HOME=/usr/lib/jvm/java-6-sun
>
> Full stack traces:
> java.lang.NoClassDefFoundError: Could not initialize class
> com.sun.jna.Native
> at com.sun.jna.Pointer.(Pointer.java:42)
> at
> org.apache.cassandra.cache.SerializingCache.serialize(SerializingCache.java:92)
> at
> org.apache.cassandra.cache.SerializingCache.put(SerializingCache.java:154)
> at
> org.apache.cassandra.cache.InstrumentingCache.put(InstrumentingCache.java:63)
> at
> org.apache.cassandra.db.ColumnFamilyStore.cacheRow(ColumnFamilyStore.java:1150)
> at
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1174)
> at
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131)
> at org.apache.cassandra.db.Table.getRow(Table.java:378)
> at
> org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
> at
> org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:797)
> at
> org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1265)
> 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:662)
>  INFO [pool-1-thread-1] 2011-11-02 10:26:46,738 Memtable.java (line 177)
> CFS(Keyspace='BigSet', ColumnFamily='theKeys') liveRatio is
> 18.20062753783684 (just-counted was 16.960966424636872).  calculation took
> 408ms for 8169 columns
> ERROR [ReadStage:33] 2011-11-02 10:26:56,599 AbstractCassandraDaemon.java
> (line 133) Fatal exception in thread Thread[ReadStage:33,5,main]
> java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.cassandra.cache.FreeableMemory
> at
> org.apache.cassandra.cache.SerializingCache.serialize(SerializingCache.java:92)
> at
> org.apache.cassandra.cache.SerializingCache.put(SerializingCache.java:154)
> at
> org.apache.cassandra.cache.InstrumentingCache.put(InstrumentingCache.java:63)
> at
> org.apache.cassandra.db.ColumnFamilyStore.cacheRow(ColumnFamilyStore.java:1150)
> at
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1174)
> at
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131)
> at org.apache.cassandra.db.Table.getRow(Table.java:378)
> at
> org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
> at
> org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:797)
> at
> org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1265)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>
>

Re: Debian package jna bug workaroung

2011-11-03 Thread Peter Tillotson 
Cassandra 1.0.1 and only seemed to happen with
* JAVA_HOME=/usr/lib/jvm/java-6-sun
and jna.jar copied into /usr/share/cassandra(/lib)

I then saw the detail in the init script and how it was being linked

Is there a way I can verify which provider is being used? I want to make
sure Off heap is being used in the default config.

On 03/11/11 19:06, paul cannon wrote:
> I can't reproduce this. What version of the cassandra deb are you using,
> exactly, and why are you symlinking or copying jna.jar into
> /usr/share/cassandra?  The initscript should be adding
> /usr/sahre/java/jna.jar to the classpath, and that should be all you need.
> 
> The failure you see with o.a.c.cache.FreeableMemory is not because the
> jre can't find the class, it's just that it can't initialize the class
> (because it needs JNA, and it can't find JNA).
> 
> p
> 
> On Wed, Nov 2, 2011 at 4:42 AM, Peter Tillotson  > wrote:
> 
> see below
>  * JAVA_HOME=/usr/lib/jvm/java-6-openjdk 
> works
> --
> Reading the documentation over at Datastax
> “The Debian and RPM packages of Cassandra install JNA automatically”
> 
> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-improved-memory-and-disk-space-management
> 
> And indeed the Debian package depends on jna, and the
> /etc/init.d/cassandra looks as though in adds
> /usr/share/java/jna.jar to the classpath, and here is the but. 
> 
> If I copy or symlink jna.jar into:
>  * /usr/share/cassandra
>  * /usr/share/cassandra/lib
> Whenever a column family initialises I get:
> java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.cassandra.cache.FreeableMemory
> 
> This suggests to me that:
>  1) By default, for me at least, in Debian jna.jar is not on the
> classpath
>  2) There is an additional classpath issue
>  jar -tf apache-cassandra.jar | grep "FreeableMemory" succeeds
> 
> I'm running on: 
>  * Ubuntu 10.04 x64
>  * JAVA_HOME=/usr/lib/jvm/java-6-sun
> 
> Full stack traces:
> java.lang.NoClassDefFoundError: Could not initialize class
> com.sun.jna.Native
> at com.sun.jna.Pointer.(Pointer.java:42)
> at
> 
> org.apache.cassandra.cache.SerializingCache.serialize(SerializingCache.java:92)
> at
> org.apache.cassandra.cache.SerializingCache.put(SerializingCache.java:154)
> at
> 
> org.apache.cassandra.cache.InstrumentingCache.put(InstrumentingCache.java:63)
> at
> 
> org.apache.cassandra.db.ColumnFamilyStore.cacheRow(ColumnFamilyStore.java:1150)
> at
> 
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1174)
> at
> 
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131)
> at org.apache.cassandra.db.Table.getRow(Table.java:378)
> at
> 
> org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
> at
> 
> org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:797)
> at
> 
> org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1265)
> 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:662)
>  INFO [pool-1-thread-1] 2011-11-02 10:26:46,738 Memtable.java (line
> 177) CFS(Keyspace='BigSet', ColumnFamily='theKeys') liveRatio is
> 18.20062753783684 (just-counted was 16.960966424636872).
>  calculation took 408ms for 8169 columns
> ERROR [ReadStage:33] 2011-11-02 10:26:56,599
> AbstractCassandraDaemon.java (line 133) Fatal exception in thread
> Thread[ReadStage:33,5,main]
> java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.cassandra.cache.FreeableMemory
> at
> 
> org.apache.cassandra.cache.SerializingCache.serialize(SerializingCache.java:92)
> at
> org.apache.cassandra.cache.SerializingCache.put(SerializingCache.java:154)
> at
> 
> org.apache.cassandra.cache.InstrumentingCache.put(InstrumentingCache.java:63)
> at
> 
> org.apache.cassandra.db.ColumnFamilyStore.cacheRow(ColumnFamilyStore.java:1150)
> at
> 
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1174)
> at
> 
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131)
> at org.apache.cassandra.db.Table.getRow(Table.java:378)
> at
> 
> org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
> at
> 
> org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(Storag

Re: Debian package jna bug workaroung

2011-11-04 Thread paul cannon 
The cassandra-cli tool will show you, if you're using at least cassandra
1.0.1, in a "describe" command.  If not, you can make a thrift
describe_keyspace() call some other way, and check the value of the
appropriate CfDef's row_cache_provider string.  If it's
SerializingCacheProvider, it's off-heap.  Note that I think you need to
create the columnfamily while JNA is present, not just have JNA present
when cassandra starts.  Might be wrong on that.

p


On Thu, Nov 3, 2011 at 4:10 PM, Peter Tillotson wrote:

> Cassandra 1.0.1 and only seemed to happen with
> * JAVA_HOME=/usr/lib/jvm/java-6-sun
> and jna.jar copied into /usr/share/cassandra(/lib)
>
> I then saw the detail in the init script and how it was being linked
>
> Is there a way I can verify which provider is being used? I want to make
> sure Off heap is being used in the default config.
>
> On 03/11/11 19:06, paul cannon wrote:
> > I can't reproduce this. What version of the cassandra deb are you using,
> > exactly, and why are you symlinking or copying jna.jar into
> > /usr/share/cassandra?  The initscript should be adding
> > /usr/sahre/java/jna.jar to the classpath, and that should be all you
> need.
> >
> > The failure you see with o.a.c.cache.FreeableMemory is not because the
> > jre can't find the class, it's just that it can't initialize the class
> > (because it needs JNA, and it can't find JNA).
> >
> > p
> >
> > On Wed, Nov 2, 2011 at 4:42 AM, Peter Tillotson  > > wrote:
> >
> > see below
> >  * JAVA_HOME=/usr/lib/jvm/java-6-openjdk
> > works
> > --
> > Reading the documentation over at Datastax
> > “The Debian and RPM packages of Cassandra install JNA automatically”
> >
> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-improved-memory-and-disk-space-management
> >
> > And indeed the Debian package depends on jna, and the
> > /etc/init.d/cassandra looks as though in adds
> > /usr/share/java/jna.jar to the classpath, and here is the but.
> >
> > If I copy or symlink jna.jar into:
> >  * /usr/share/cassandra
> >  * /usr/share/cassandra/lib
> > Whenever a column family initialises I get:
> > java.lang.NoClassDefFoundError: Could not initialize class
> > org.apache.cassandra.cache.FreeableMemory
> >
> > This suggests to me that:
> >  1) By default, for me at least, in Debian jna.jar is not on the
> > classpath
> >  2) There is an additional classpath issue
> >  jar -tf apache-cassandra.jar | grep "FreeableMemory" succeeds
> >
> > I'm running on:
> >  * Ubuntu 10.04 x64
> >  * JAVA_HOME=/usr/lib/jvm/java-6-sun
> >
> > Full stack traces:
> > java.lang.NoClassDefFoundError: Could not initialize class
> > com.sun.jna.Native
> > at com.sun.jna.Pointer.(Pointer.java:42)
> > at
> >
> org.apache.cassandra.cache.SerializingCache.serialize(SerializingCache.java:92)
> > at
> >
> org.apache.cassandra.cache.SerializingCache.put(SerializingCache.java:154)
> > at
> >
> org.apache.cassandra.cache.InstrumentingCache.put(InstrumentingCache.java:63)
> > at
> >
> org.apache.cassandra.db.ColumnFamilyStore.cacheRow(ColumnFamilyStore.java:1150)
> > at
> >
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1174)
> > at
> >
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131)
> > at org.apache.cassandra.db.Table.getRow(Table.java:378)
> > at
> >
> org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
> > at
> >
> org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:797)
> > at
> >
> org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1265)
> > 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:662)
> >  INFO [pool-1-thread-1] 2011-11-02 10:26:46,738 Memtable.java (line
> > 177) CFS(Keyspace='BigSet', ColumnFamily='theKeys') liveRatio is
> > 18.20062753783684 (just-counted was 16.960966424636872).
> >  calculation took 408ms for 8169 columns
> > ERROR [ReadStage:33] 2011-11-02 10:26:56,599
> > AbstractCassandraDaemon.java (line 133) Fatal exception in thread
> > Thread[ReadStage:33,5,main]
> > java.lang.NoClassDefFoundError: Could not initialize class
> > org.apache.cassandra.cache.FreeableMemory
> > at
> >
> org.apache.cassandra.cache.SerializingCache.serialize(SerializingCache.java:92)
> > at
> >
> org.apache.cassandra.cache.SerializingCache.put(SerializingCache.java:154)
> > at
> >
> org.apache.cassandra.cache.InstrumentingCache.put(InstrumentingCache.

Re: Debian package jna bug workaroung

2011-11-07 Thread Peter Tillotson 
Thanks - this is working correctly 
I have checked the classpath in vissual vm and it contains jna, and 
cassandra-cli describe reports SerializingCacheProvider,

If you add jna a second time with the Sun jvm you seem to get the exception 
which had me wondering what cache provider was active.

p

--
java.class.path=/usr/share/cassandra/lib/antlr-3.2.jar:/usr/share/cassandra/lib/avro-1.4.0-fixes.jar:/usr/share/cassandra/lib/avro-1.4.0-sources-fixes.jar:/usr/share/cassandra/lib/commons-cli-1.1.jar:/usr/share/cassandra/lib/commons-codec-1.2.jar:/usr/share/cassandra/lib/commons-lang-2.4.jar:/usr/share/cassandra/lib/compress-lzf-0.8.4.jar:/usr/share/cassandra/lib/concurrentlinkedhashmap-lru-1.2.jar:/usr/share/cassandra/lib/guava-r08.jar:/usr/share/cassandra/lib/high-scale-lib-1.1.2.jar:/usr/share/cassandra/lib/jackson-core-asl-1.4.0.jar:/usr/share/cassandra/lib/jackson-mapper-asl-1.4.0.jar:/usr/share/cassandra/lib/jamm-0.2.5.jar:/usr/share/cassandra/lib/jline-0.9.94.jar:/usr/share/cassandra/lib/json-simple-1.1.jar:/usr/share/cassandra/lib/libthrift-0.6.jar:/usr/share/cassandra/lib/log4j-1.2.16.jar:/usr/share/cassandra/lib/servlet-api-2.5-20081211.jar:/usr/share/cassandra/lib/slf4j-api-1.6.1.jar:/usr/share/cassandra/lib/slf4j-log4j12-1.6.1.jar:/usr/share
/cassandra/lib/snakeyaml-1.6.jar:/usr/share/cassandra/lib/snappy-java-1.0.3.jar:/usr/share/cassandra/apache-cassandra-1.0.1.jar:/usr/share/cassandra/apache-cassandra-thrift-1.0.1.jar:/usr/share/cassandra/apache-cassandra.jar:/usr/share/java/jna.jar:/etc/cassandra:/usr/share/java/commons-daemon.jar:/usr/share/cassandra/lib/jamm-0.2.5.jar
java.class.version=50.0



From: paul cannon 
To: user@cassandra.apache.org
Sent: Friday, 4 November 2011, 19:05
Subject: Re: Debian package jna bug workaroung


The cassandra-cli tool will show you, if you're using at least cassandra 1.0.1, 
in a "describe" command.  If not, you can make a thrift describe_keyspace() 
call some other way, and check the value of the appropriate CfDef's 
row_cache_provider string.  If it's SerializingCacheProvider, it's off-heap.  
Note that I think you need to create the columnfamily while JNA is present, not 
just have JNA present when cassandra starts.  Might be wrong on that.

p



On Thu, Nov 3, 2011 at 4:10 PM, Peter Tillotson  wrote:

Cassandra 1.0.1 and only seemed to happen with
>* JAVA_HOME=/usr/lib/jvm/java-6-sun
>and jna.jar copied into /usr/share/cassandra(/lib)
>
>I then saw the detail in the init script and how it was being linked
>
>Is there a way I can verify which provider is being used? I want to make
>sure Off heap is being used in the default config.
>
>
>On 03/11/11 19:06, paul cannon wrote:
>> I can't reproduce this. What version of the cassandra deb are you using,
>> exactly, and why are you symlinking or copying jna.jar into
>> /usr/share/cassandra?  The initscript should be adding
>> /usr/sahre/java/jna.jar to the classpath, and that should be all you need.
>>
>> The failure you see with o.a.c.cache.FreeableMemory is not because the
>> jre can't find the class, it's just that it can't initialize the class
>> (because it needs JNA, and it can't find JNA).
>>
>> p
>>
>> On Wed, Nov 2, 2011 at 4:42 AM, Peter Tillotson 
>> <mailto:slatem...@yahoo.co.uk>> wrote:
>>
>>     see below
>>      * JAVA_HOME=/usr/lib/jvm/java-6-openjdk
>>     works
>>     --
>>     Reading the documentation over at Datastax
>>     “The Debian and RPM packages of Cassandra install JNA automatically”
>>     
>> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-improved-memory-and-disk-space-management
>>
>>     And indeed the Debian package depends on jna, and the
>>     /etc/init.d/cassandra looks as though in adds
>>     /usr/share/java/jna.jar to the classpath, and here is the but.
>>
>>     If I copy or symlink jna.jar into:
>>      * /usr/share/cassandra
>>      * /usr/share/cassandra/lib
>>     Whenever a column family initialises I get:
>>     java.lang.NoClassDefFoundError: Could not initialize class
>>     org.apache.cassandra.cache.FreeableMemory
>>
>>     This suggests to me that:
>>      1) By default, for me at least, in Debian jna.jar is not on the
>>     classpath
>>      2) There is an additional classpath issue
>>          jar -tf apache-cassandra.jar | grep "FreeableMemory" succeeds
>>
>>     I'm running on:
>>      * Ubuntu 10.04 x64
>>      * JAVA_HOME=/usr/lib/jvm/java-6-sun
>>
>>     Full stack traces:
>>     java.lang.NoClassDefFoundError: Could not initialize class
>>     com.sun.jna.Native
&g

Re: Debian package jna bug workaroung

2011-11-11 Thread Timothy Wall 
Peter Tillotson  yahoo.co.uk> writes:

> 
> Full stack traces:
> 
> java.lang.NoClassDefFoundError:
>  Could not initialize class com.sun.jna.Native
> 
> 
>         at com.sun.jna.Pointer.(Pointer.java:42)
>         at
org.apache.cassandra.cache.SerializingCache.serialize(SerializingCache.java:92)


Note that the exception is thrown from com.sun.jna.Pointer, while it is loading
com.sun.jna.Native.  JNA *has* been found, and started loading, but encountered
some problem that prevented the com.sun.jna.Native class from initializing.

This may be because you have two conflicting versions of jna.jar in your
classpath, or conflicting versions of the JNA native library stub in your
library load path.  Version 3.4.0 of JNA (available soon) will make these sorts
of conflicts more obvious.