java - Java 1.6 から Java 1.7 に切り替えた後の memcached エラー

Question

MemcacheD は、最近 Java 6 から Java 7 に切り替えるまで正常に動作していました。現在、次のような例外が発生し続けています。

java.lang.RuntimeException: Exception waiting for value
    at net.spy.memcached.MemcachedClient.get(MemcachedClient.java:1025)
    at net.spy.memcached.MemcachedClient.get(MemcachedClient.java:1042)
...
...
Caused by: java.util.concurrent.ExecutionException: java.lang.RuntimeException: Cancelled
    at net.spy.memcached.internal.OperationFuture.get(OperationFuture.java:169)
    at net.spy.memcached.internal.GetFuture.get(GetFuture.java:62)
    at net.spy.memcached.MemcachedClient.get(MemcachedClient.java:1021)

この

java.lang.RuntimeException: Failed waiting for store
    at net.spy.memcached.MemcachedClient.mutateWithDefault(MemcachedClient.java:1696)
    at net.spy.memcached.MemcachedClient.incr(MemcachedClient.java:1806)
...
...
Caused by: java.util.concurrent.ExecutionException: java.lang.RuntimeException: Cancelled
    at net.spy.memcached.internal.OperationFuture.get(OperationFuture.java:169)
    at net.spy.memcached.MemcachedClient.mutateWithDefault(MemcachedClient.java:1687)
    ... 75 more

ありがとうございます！