clojure - Out of memory on spit -


i don't understand why code raise out of memory exception.

i have agent call function append line "test.log" file. out of memory on persistenthashmap $ bitmapindexednode.assoc(persistenthashmap.java:624).

(use 'clojure.java.io)  (def the-agent(agent nil))  (defn process [_o content]      (spit "test.log" content :append true)  )  (defn write-all []      (doseq         [x (range 1 5000000)]         (send-off             the-agent             process             "line appended\n"         )     )  )

thanks !

the dispatched sends blocked on i/o on individual spits. dispatches created faster can completed , accumulating. 

(defn write-all []    (doseq [x (range 1 5000000)]      (send-off the-agent process "foo")      (when (zero? (mod x 100000))    (println (. the-agent clojure.lang.agent/getqueuecount)))))   user=> (write-all) 99577 199161 298644 398145 497576 596548 exception in thread "nrepl-worker-0" java.lang.outofmemoryerror: java heap space

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