Problem testing voldemort with ycsb.

[hui]

Hi,

I want to test the performance of voldermort cluster with ycsb. Currently I am testing on my pc. However, I can't even load the data to the store. As it shows:

Command line: -db com.yahoo.ycsb.db.VoldemortClient -p bootstrap_urls=tcp://localhost:6666 -P workloads/workloada -load

Loading workload...

Starting test.

Exception in thread "Thread-1" java.lang.NoSuchMethodError: voldemort.client.StoreClient.put(Ljava/lang/Object;Ljava/lang/Object;)V

at com.yahoo.ycsb.db.VoldemortClient.insert(VoldemortClient.java:76)

at com.yahoo.ycsb.DBWrapper.insert(DBWrapper.java:145)

at com.yahoo.ycsb.workloads.CoreWorkload.doInsert(CoreWorkload.java:461)

at com.yahoo.ycsb.ClientThread.run(Client.java:269)

[OVERALL], RunTime(ms), 1172.0

[OVERALL], Throughput(ops/sec), 0.0

I configure the node use:bin/voldemort-server.sh ycsbhome/voldemort-binding/conf

I am thinking whether it is wrong with the key/value serializer? But I changed the serializer type and it still didn't work..

I need your help, people!!!! Thanks thanks very much! Can you help me?

[ctasada]

Hi Hui,

Some point you should double-check:

- YCSB has a dependency with Voldemort 0.81 version from some home-made maven repository

- Check that your code has the proper dependencies embedded. Open the ycsb voldemort-binding.jar and double check that you've the voldemort client code there.

Don't hesitate to ask again if you still have problems.

Note: The voldemort-performace.sh tool is based in the YCSB, so maybe it's enough depending what do you want to benchmark.

Regards,

Carlos.

[hui]

Hi,

I chaged a place of the VodemortClient.java and the problem has been solved. I am currently running a voldemort cluster configured as one zone, because my cassandra nodes are also configured to be in one datacenter. I am using the latest ycsb(1.4) and voldemort(0.96).

It works good but I find one problem.  I can't use the hinded hand off strategy, whenever I put it there, it says it expect something else. So pehaps the ycsb doens't support it??? Thanks very much!

在 2012年12月3日星期一UTC+1下午12时44分36秒，ctasada写道：

[hui]

Hi,

And also I tried Voldemort performance tool, I didn't look into it but I feel it is good, maybe because it is specifically for voldemort. I want to use YCSB because I need to comapre Voldemort with Cassandra, and for Cassandra, I used YCSB, So I want to keep the same. And now the problem is really i want to use hinted handoff strategy, but ycsb don't like it :(  Can you help me with this? Thanks very very much!

在 2012年12月3日星期一UTC+1下午1时25分15秒，hui写道：

[Carlos Tasada]

Vi Hui,

With out the stacktrace I can only guess the problem. As I said in my previous post, YSCB supports Voldemort 0.81. Hinted-handoff was included in 0.90. Try to upgrade your dependencies in YCSB to a newer Voldemort version

If that's not problem, please include your stack trace to have more info

Regards,

Carlos

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[Bing X]

Sorry, I join the discussion from the middle.

Can you give a list on how to configure ycsb to run a single node voldemort as an example? Or refer me to some instruction for this?

thanks!

[Vinoth Chandar]

https://github.com/voldemort/voldemort/wiki/performance-tool

Thanks
Vinoth

[anonymous]

thanks. It is useful.

But I want the whole process, instructions on how to run voldemort, specifically configure ycsb to test the performance of voldemort. I have successfully build ycsb with voldemort0.96. Now I just have no clue how to configure ycsb to beat it.

[Vinoth Chandar]

I am a little lost.. is your intention perf testing voldemort and are you asking for performant voldemort server configs?

[anonymous]

well. I want to run ycsb (yahoo cloud service benchmarking) to beat voldemort. I don't know how to configure ycsb for this purpose.

[Vinoth Chandar]

If its a ycsb question, then I am not sure if I am the right person to answer it..

[anonymous]

where you changed in VoldemortClient.java?

thanks!

[anonymous]

Hui, I met exactly the same problem as you mentioned. Where you change the VoldemortClient.java?

thanks a lot!

[hui]

Hi, sorry to reply later! Yes, I changed a place at first, storeClient.put(key, (HashMap<String,String>)StringByteIterator.getStringMap(values));

I have deleted  (HashMap<String,String>) . and it worked, but after I start my test on cluster somewhile, I think that is not the problem and I add it back.  However you can try this.

If you are running test with replications and with update function, you might have problems. Otherwise it should be ok.

Good luck!

在 2013年3月1日星期五UTC+1下午11时39分16秒，anonymous写道：