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-rw-r--r--system/doc/design_principles/sup_princ.xml7
1 files changed, 7 insertions, 0 deletions
diff --git a/system/doc/design_principles/sup_princ.xml b/system/doc/design_principles/sup_princ.xml
index 42d9f3e3d8..9e7cc2f543 100644
--- a/system/doc/design_principles/sup_princ.xml
+++ b/system/doc/design_principles/sup_princ.xml
@@ -184,6 +184,13 @@ init(...) ->
shutdown. It is also allowed to set it to <c>infinity</c>, if the
child process is a worker.</item>
</list>
+ <warning>
+ <p>Be careful by setting the <c>Shutdown</c> strategy to
+ <c>infinity</c> when the child process is a worker. Because, in this
+ situation, the termination of the supervision tree depends on the
+ child process, it must be implemented in a safe way and its cleanup
+ procedure must always return.</p>
+ </warning>
</item>
<item>
<p><c>Type</c> specifies if the child process is a supervisor or