Github user d2r commented on a diff in the pull request:
https://github.com/apache/storm/pull/554#discussion_r40718750
--- Diff: storm-core/src/clj/backtype/storm/log.clj ---
@@ -44,3 +46,11 @@
(defn log-stream
[& args]
(apply log/log-stream args))
+
+(defmacro log-pprint
+ [& args]
+ `(let [^StringWriter writer# (StringWriter.)]
+ (doall
+ (for [object# [~@args]]
+ (pprint object# writer#)))
+ (log-message "\n" writer#)))
--- End diff --
I think it was to clean up the output. Otherwise the data structure would
not begin on its own line but instead begin after the timestamp, etc., and so
that was not "pretty."
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