Hi all,
I have the following function to list all the files recursively under a
directory.
(defn list-all-files2 [path]
(let [basepath (java.io.File. path)]
(loop [origlist [basepath] finallist []]
(if-let [cur (first origlist)]
;This line is not required (if (.isDirectory cur)
(recur (concat (rest origlist) (.listFiles cur)) (conj finallist
(.getCanonicalPath cur)))
finallist))))
It runs fine, when the number of files are quite less, 10-20.
But when I recurse through even moderately large amount of files, it fails
with stackoverflow! The total number of files are not that much (50114). So
even if each of the filename is 100 chars long, it would roughly take (5M
bytes, which is 5MB). But I get a stack overflow error, and I have no clue.
I think I am doing something wrong with the lazy functions.
Here is the stacktrace:
Exception in thread "main" java.lang.RuntimeException:
java.lang.StackOverflowError
at clojure.lang.Util.runtimeException(Util.java:165)
at clojure.lang.Compiler.eval(Compiler.java:6476)
at clojure.lang.Compiler.eval(Compiler.java:6455)
at clojure.lang.Compiler.eval(Compiler.java:6431)
at clojure.core$eval.invoke(core.clj:2795)
at clojure.main$eval_opt.invoke(main.clj:296)
at clojure.main$initialize.invoke(main.clj:315)
at clojure.main$null_opt.invoke(main.clj:348)
at clojure.main$main.doInvoke(main.clj:426)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at clojure.lang.Var.invoke(Var.java:405)
at clojure.lang.AFn.applyToHelper(AFn.java:163)
at clojure.lang.Var.applyTo(Var.java:518)
at clojure.main.main(main.java:37)
Caused by: java.lang.StackOverflowError
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:466)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$concat$fn__3528.invoke(core.clj:661)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java
Thanks,
ramesh
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