incr() is broken with binary protocol

It happens with the latest released spymemcached 2.8.4, even with memcached 
forced to communicate via binary protocol only. The platform is Ubuntu Linux, 
memcached 1.4.15.
java version "1.7.0_15"
OpenJDK Runtime Environment (IcedTea7 2.3.7) (7u15-2.3.7-0ubuntu1~12.04.1)
OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)

For example, just after first increment via binary protocol the string returned 
is something not usable for toLong()

scala> val mt = new MemcachedClient(new DefaultConnectionFactory, 
AddrUtil.getAddresses("localhost:11211"))
scala> val mb = new MemcachedClient(new BinaryConnectionFactory, 
AddrUtil.getAddresses("localhost:11211"))
...
scala> mb.getBulk(List("a", "b"))
res55: java.util.Map[java.lang.String,java.lang.Object] = {b=8, a=22}

scala> mb.incr("c", 2, 2, 1000000)
res56: Long = 2

scala> mb.getBulk(List("a", "b"))
res57: java.util.Map[java.lang.String,java.lang.Object] = {b=8, a=22}

scala> mb.getBulk(List("a", "b", "c"))
[line elided for control chars: possibly a scala signature]

<"c" is now something "2\ngarbage\nmore garbage">

scala> mb.getBulk(List("a", "b", "c"))
[line elided for control chars: possibly a scala signature]
scala> mb.getBulk(List("a", "b", "c"))
[line elided for control chars: possibly a scala signature]

<no luck>

scala> mb.incr("c", 2, 2, 1000000)
res61: Long = 4

scala> mb.getBulk(List("a", "b", "c"))
res62: java.util.Map[java.lang.String,java.lang.Object] = {b=8, c=4, a=22}

scala> mt.incr("d", 2, 2, 1000000)
res63: Long = 2

<notice "mt" is used>

scala> mb.getBulk(List("a", "b", "c", "d"))
res64: java.util.Map[java.lang.String,java.lang.Object] = {d=2, b=8, c=4, a=22}

Original issue reported on code.google.com by arkadi.s...@gmail.com on 25 Apr 2013 at 6:06

vstars / spymemcached

incr() is broken with binary protocol #274