C++ API for Tachyon

[Jia Zou]

Hi, guys,

My question is whether there is any way to develop C++ applications on top of Tachyon?

I did some search and it seems there are following options:

-  JNI, like libtachyon (https://github.com/stormspirit/libtachyon#libtachyon);

- Thrift

So could anyone can kindly provide some suggestions about:

1. whether it is a good idea to use libtachyon to develop C++ applications in terms of reliability and performance? anyone used that before?

2. are there any existing code base for C++ API implementations based on thrift?

3. which will have better performance: JNI or thrift?

Thanks a lot!

Jia

[Jiří Šimša]

Hi Jia, both options you mention (JNI and Thrift) can be used for interacting with an Alluxio (formerly Tachyon) system from a C++ application, but I am not aware of any implementations of either of the two options for the latest version of Alluxio (version 1.0.1).

The advantage of the JNI option is that it is easier to implement because it reuses the Java client. The disadvantage is the overhead of creating a JVM to run the code, so I would expect the Thrift based approach to have better performance; but the implementation of the Thrift-based approach would be more involved as it needs to recreate the logic used by the Java client.

Best,

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Jiří Šimša

Alluxio, Inc.

[Jia Zou]

Thanks Jiri, for your helpful replies!

Best Regards,

Jia

[Adam]

Jia, Jiří,

I've spent some time over the last month or so porting libtachyon to the latest version of Alluxio.  I have things functionally working (note that there's still a good amount of clean-up 

I'd like to do) and I'm hoping to contribute to the libtachyon repo sometime soon (this week or next).  If you can wait a little while longer, this might be a good option.

Thanks,
Adam

[Jia Zou]

Hi Adam,

Great, we are looking forward to using your work!

Could you please send me a note once you finish the porting work? We will appreciate, thanks.

Best Regards,

Jia

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