I'm trying to process mid/large result sets with Clojure, and not
having any success.
(ns foo
(:require [clojure.contrib.sql :as sql]))
(def *db* {:classname "com.mysql.jdbc.Driver"
:subprotocol "mysql"
:subname "//DSN"
:user "read"
:password "swordfish"})
(sql/with-connection *db*
(sql/with-query-results rs ["SELECT * FROM Foo;"]
(prn "Done")))
When I run this at the REPL, it dies with:
java.lang.OutOfMemoryError: Java heap space (NO_SOURCE_FILE:0)
I don't understand why this is OOMing. Even if it were trying to
buffer the whole result set - which I _really_ hope it's not - the
default 128mb JVM memory limit should be enough to hold it.
My dataset is 155k rows, each anywhere from 300 bytes to 1kb. It
should be 50-75mb for the whole thing. This is test data, and my full
dataset is 25m rows, so increasing the memory limit isn't a good
solution for me.
Any ideas?
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