binary key breaks view generation (non-UTF8 byte sequence in key)

Setting values with a binary key will break the view updater. To ensure this isn't specific to MacOS I also deployed couchbase to a CentOS machine and the same problem occurred.

Problem: Error occurs when View updater encounters certain binary keys
Expected: View updater should ignore binary keys with non-UTF8 byte sequences

Discussion:
This could disable the functionality of a view if an unscrupulous user caused a key to be generated with invalid utf8 byte sequences. I like that I can set binary values (eg, invalid json) and there isn't any issues generating views – would be good to see the same functionality for keys. Also – I'm assuming the issue is that the byte sequence is non-utf8.

Below is example with Ruby code which reproduces the issue as well as the only (relevant) errors I could find in log files.

1. Connect to bucket and set a value
   1.9.2p290 :013 > rc = Couchbase.connect(:hostname => 'couch.test', :bucket => 'couchtest')
   => #<Couchbase::Bucket:0x007fce2a9a67f8 "http://couch.test:8091/pools/default/buckets/couchtest/" default_format=:document, default_flags=0x0, quiet=false, connected=true, timeout=2500000>
   1.9.2p290 :014 > rc.set('test', {set:1}

   )
   => 11045888751782266112

In browser, access http://couch.test:8092/couchtest/_design/dev_b/_view/b?full_set=true&connection_timeout=60000&limit=10&skip=0
This will render a beautiful JSON hash which has one row (as expected)

1.9.2p290 :015 > rc.set("xFF\xFF end",

)
=> 8720605621192688896
1.9.2p290 :016 > rc.set("test end",

)
=> 13489129147942241536

1. Notice, all the values can be read
   1.9.2p290 :017 > c.get("test")
   => {"set"=>1}
   1.9.2p290 :018 > c.get("xFF\xFF end")
   => {"set"=>1}

   
   1.9.2p290 :019 > c.get("test end")
   =>

   {"set"=>1}

In browser access http://couch.test:8092/couchtest/_design/dev_b/_view/b?full_set=true&connection_timeout=60000&limit=10&skip=0

This will only show one row (excluding new values) and an error will appear in log file:

[couchdb:info] [2012-08-06 15:50:43] [ns_1@couch.test:<0.9035.0>:couch_log:error:42] Set view `couchtest`, main group `_design/dev_a`, received error from updater: epipe

From here, future values or modifications will not render to the view and an error occurs with each view request.