IllegalStateException: Shutting down

Hello,

When I try to set,get or delete a value from/to CouchBase from a normal Java application everything works fine.
But, when we try to retrieve a value from CouchBase from Hadoop mapper class, we receive the following exception

Caused by: java.lang.IllegalStateException: Shutting down
at net.spy.memcached.MemcachedConnection.checkState(MemcachedConnection.java:821)
at net.spy.memcached.MemcachedConnection.enqueueOperation(MemcachedConnection.java:638)
at net.spy.memcached.MemcachedClient.asyncGet(MemcachedClient.java:835)
at net.spy.memcached.MemcachedClient.get(MemcachedClient.java:997)
at net.spy.memcached.MemcachedClient.get(MemcachedClient.java:1018)
at com.nsn.sai.tnp.cache.plugins.couchbase.CouchBaseDimensionCacheService.getCacheDimensionDetails(CouchBaseDimensionCacheService.java:126)
... 7 more

Can someone provide their insights on this?

Thanks,
Nagavinod.