UnsupportedClassVersionError

[ivanmladek]

When compiling simple code with the cartodb-clj library an UnsupportedClassVersionError error comes up. I recall seeing that before on someone's machine during the EcoHack. How did we solve it?

~/dev/weatherbill/projects/blue-marble/banzai$ ../../../tools/lein2 do clean, compile, jarhadoop
Compiling com.climate.banzai.cartodb.hadoop.cartodb
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/cartodb/impl/SecuredCartoDBClient : Unsupported major.minor version 51.0, compiling:(core.clj:1)
at clojure.lang.Compiler$InvokeExpr.eval(Compiler.java:3387)
at clojure.lang.Compiler.compile1(Compiler.java:7035)
at clojure.lang.Compiler.compile1(Compiler.java:7025)

[danhammer]

I am getting this too, now. @eightysteele any suggestions? some versioning error.

[eightysteele]

I think @robinkraft sorted this out. Robin, what was the fix?

[danhammer]

Great. I just wrote a project (up until the cartodb upload) to harvest the
fires periodically for Indonesia. We can monitor the effect on Singapore.
Let me know when you figure it out.

On Sat, Jun 22, 2013 at 8:53 PM, Aaron Steele notifications@github.comwrote:

I think @robinkraft https://github.com/robinkraft sorted this out.
Robin, what was the fix?

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/26#issuecomment-19868650
.

[robinkraft]

I don't remember, sorry. Probably a deps or java version issue.

[danhammer]

Yes. This was the issue. You need to have the official, Oracle version of JDK, found here. I will start a new issue to add this to the README.

[robinkraft]

That sucks. Maybe open an issue/support message w cartodb about their java library?

On Jun 24, 2013, at 8:20 AM, Dan notifications@github.com wrote:

Yes. This was the issue. You need to have the official, Oracle version of JDK, found here. I will start a new issue to add this to the README.

—
Reply to this email directly or view it on GitHub.

[ivanmladek]

Thanks guys for the reply, and sorry for not getting to this earlier.

[robinkraft]

Seems this is an issue with cartodb-clj version 1.5.5, but not 1.5.0.

[robinkraft]

The major difference seems to be the addition of the official CartoDB Java client, replacing the version @eightysteele had forked.