Riak changing the first two bytes of data?

Sam Tingleff sam at tingleff.com
Fri May 28 18:29:28 EDT 2010


Yeah... looks like the java client is mangling on get.

On Fri, May 28, 2010 at 3:18 PM, Sean Cribbs <sean at basho.com> wrote:

> Your other alternative is to write with the Java client, then download the
> data with an external program like curl, and see if the bytes are mangled
> before they get to Riak (using a hex editor or something).  You might even
> use something like Wireshark to see what is sent in the TCP packets, if you
> want to get fancy.
>
> My suspicion is that they are being modified somewhere in the Java stack.
>  Riak is completely agnostic about any binary data you give it.
>
> Sean Cribbs <sean at basho.com>
> Developer Advocate
> Basho Technologies, Inc.
> http://basho.com/
>
> On May 28, 2010, at 6:06 PM, Sam Tingleff wrote:
>
> It looks like byte values < 0 are consistently modified on read.
>
> On Fri, May 28, 2010 at 2:58 PM, Sam Tingleff <sam at tingleff.com> wrote:
>
>> Yeah, you're right... I'm sending as application/octet-stream. Is there
>> some special handling depending on content-type?
>>
>>
>> On Fri, May 28, 2010 at 2:56 PM, Sean Cribbs <sean at basho.com> wrote:
>>
>>> It seems more than just the first two bytes are changed.  What
>>> content-type are you sending the data as?
>>>
>>> Sean Cribbs <sean at basho.com>
>>> Developer Advocate
>>> Basho Technologies, Inc.
>>> http://basho.com/
>>>
>>> On May 28, 2010, at 5:46 PM, Sam Tingleff wrote:
>>>
>>> >
>>> > It sounds crazy, I know.
>>> >
>>> > I'm using the Java client with riak 0.10.1-1. Sending a byte array
>>> seems to work if it is a UTF-8 encoded string. But if I send serialized
>>> object data, or just compressed bytes, the first two bytes seem to come back
>>> modified on read.
>>> >
>>> > From the debugger... Sending:
>>> > [31, -117, 8, 0, 0, 0, 0, 0, 0, 0, -53, 72, -51, -55, -55, 87, 72, 41,
>>> 77, 73, 5, 0, 108, 24, 72, 30, 10, 0, 0, 0]
>>> >
>>> > I get back:
>>> > [31, 63, 8, 0, 0, 0, 0, 0, 0, 0, -24, 72, -22, -125, -125, 87, 72, 41,
>>> 77, 73, 5, 0, 108, 24, 72, 30, 10, 0, 0, 0]
>>> >
>>> > What's going on? Thanks!
>>> > _______________________________________________
>>> > riak-users mailing list
>>> > riak-users at lists.basho.com
>>> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
>>>
>>>
>>
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