Re: NullWritable causes IllegalAccessException

[Avery Ching]

Seems fairly reasonable. =)

Avery

On 12/6/11 12:31 PM, Jake Mannix wrote:
We could special-case NullWritable, and if that class is put into the 
conf, instantiate it separately.  Seems like a common case if a user 
wants to ignore something.


  -jake

On Mon, Dec 5, 2011 at 4:29 PM, Avery Ching > wrote:


Actually, isn't that because the default constructor is private?
 You probably need to write your own or subclass NullWritable with
a public default constructor.

Avery


On 12/5/11 3:59 PM, Inci Cetindil wrote:

I was trying to use NullWritable as the type of my edge
values. But it causes an IllegalAccessException when
BspUtils.createEdgeValue() method tries to instantiate it;
since NullWritable is Singleton with a private constructor. Is
there a way to use NullWritable, or do I need to use another
Writable?

Thanks,
Inci

Re: NullWritable causes IllegalAccessException

[Jake Mannix]

We could special-case NullWritable, and if that class is put into the conf,
instantiate it separately.  Seems like a common case if a user wants to
ignore something.

  -jake

On Mon, Dec 5, 2011 at 4:29 PM, Avery Ching  wrote:

> Actually, isn't that because the default constructor is private?  You
> probably need to write your own or subclass NullWritable with a public
> default constructor.
>
> Avery
>
>
> On 12/5/11 3:59 PM, Inci Cetindil wrote:
>
>> I was trying to use NullWritable as the type of my edge values. But it
>> causes an IllegalAccessException when BspUtils.createEdgeValue() method
>> tries to instantiate it; since NullWritable is Singleton with a private
>> constructor. Is there a way to use NullWritable, or do I need to use
>> another Writable?
>>
>> Thanks,
>> Inci
>>
>
>

Re: NullWritable causes IllegalAccessException

[Avery Ching]

Actually, isn't that because the default constructor is private?  You 
probably need to write your own or subclass NullWritable with a public 
default constructor.


Avery

On 12/5/11 3:59 PM, Inci Cetindil wrote:

I was trying to use NullWritable as the type of my edge values. But it causes 
an IllegalAccessException when BspUtils.createEdgeValue() method tries to 
instantiate it; since NullWritable is Singleton with a private constructor. Is 
there a way to use NullWritable, or do I need to use another Writable?

Thanks,
Inci

NullWritable causes IllegalAccessException

[Inci Cetindil]

I was trying to use NullWritable as the type of my edge values. But it causes 
an IllegalAccessException when BspUtils.createEdgeValue() method tries to 
instantiate it; since NullWritable is Singleton with a private constructor. Is 
there a way to use NullWritable, or do I need to use another Writable?

Thanks,
Inci