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Type: Bug
Resolution: Done
Priority: Major
Fix Version/s: 10.0.0.Final
Affects Version/s: 9.4.11.Final
Component/s: Memcached
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Steps to Reproduce:

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execute a touch operation agains an Infinispan Server memcache socket-binding.

Expected Behaviour
The object's expiration time should be reset (or similar)

Actual Behaviour
2019-06-06 10:45:31,082 ERROR [org.infinispan.server.memcached.MemcachedDecoder] (Memcached-ServerIO-3-2) ISPN005003: Exception reported: org.infinispan.server.memcached.UnknownOperationException: Unknown operation: touch
at org.infinispan.server.memcached.MemcachedDecoder.toRequest(MemcachedDecoder.java:1068)
at org.infinispan.server.memcached.MemcachedDecoder.readHeader(MemcachedDecoder.java:322)
at org.infinispan.server.memcached.MemcachedDecoder.decodeHeader(MemcachedDecoder.java:202)
at org.infinispan.server.memcached.MemcachedDecoder.decodeDispatch(MemcachedDecoder.java:180)
at org.infinispan.server.memcached.MemcachedDecoder.decode(MemcachedDecoder.java:133)
at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
at io.netty.handler.codec.ReplayingDecoder.callDecode(ReplayingDecoder.java:366)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
at org.infinispan.server.core.transport.StatsChannelHandler.channelRead(StatsChannelHandler.java:26)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:646)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:581)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:498)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:460)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:748)

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execute a touch operation agains an Infinispan Server memcache socket-binding. Expected Behaviour The object's expiration time should be reset (or similar) Actual Behaviour 2019-06-06 10:45:31,082 ERROR [org.infinispan.server.memcached.MemcachedDecoder] (Memcached-ServerIO-3-2) ISPN005003: Exception reported: org.infinispan.server.memcached.UnknownOperationException: Unknown operation: touch at org.infinispan.server.memcached.MemcachedDecoder.toRequest(MemcachedDecoder.java:1068) at org.infinispan.server.memcached.MemcachedDecoder.readHeader(MemcachedDecoder.java:322) at org.infinispan.server.memcached.MemcachedDecoder.decodeHeader(MemcachedDecoder.java:202) at org.infinispan.server.memcached.MemcachedDecoder.decodeDispatch(MemcachedDecoder.java:180) at org.infinispan.server.memcached.MemcachedDecoder.decode(MemcachedDecoder.java:133) at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489) at io.netty.handler.codec.ReplayingDecoder.callDecode(ReplayingDecoder.java:366) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) at org.infinispan.server.core.transport.StatsChannelHandler.channelRead(StatsChannelHandler.java:26) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:646) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:581) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:498) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:460) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.lang.Thread.run(Thread.java:748)
Git Pull Request:
https://github.com/infinispan/infinispan/pull/7309

Using Infinispan Server as clustered memcached alternative we ran into the problem that the memcache protocol implementation is missing the touch operation.

Protocol Definition: https://github.com/memcached/memcached/blob/master/doc/protocol.txt

Missing Operation in Source Code: https://github.com/infinispan/infinispan/blob/master/server/memcached/src/main/java/org/infinispan/server/memcached/MemcachedDecoder.java#L1028

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