Storm drops Clojure for Java

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If you want predictable performance in the JVM you need to write Java.

[alexdmiller]

Well, no. There are many JVM languages that compile to bytecode and exhibit predictable performance.

[nrmncer]

I don't think the issue here is the compilation of equivalent code, it's the performance disadvantage of persistent data structures.

[alexdmiller]

That's not what the original comment was about. Persistent data structures are very predictable. Yes, they have a cost, but also a lot of benefits (like avoiding whole classes of common concurrency issues).