I have figured out the problem.

Error happened when key has been an empty string. However, error message is very strange, it is hard to guess.

On Mar 17, 7:55 pm, Alexander Zaitsev <[email protected]>
wrote:
Hi all,

This is a question to Dustin probably.

I am getting strange error that I can not properly diagnose.

ERROR StoreOperationImpl:116 - Error:  CLIENT_ERROR bad command line format

This error happens both on 2.0.2 and 2.2 version (that is latest). I looked at 
code, but line 116 does not have anything and moreover such error is not 
generated by Java API, it comes from memached. This error probably happens on 
JVM shutdown, when the application exists. But I try to gracefully shutdown 
memcached client, so it is not clear what is happening.

 What server version is that?  Can you show a minimal piece of code
that does that (StoreOperation covers quite a bit)?


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