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diff --git a/Section_4_Gap_analysis_in_upstream_projects.rst b/Section_4_Gap_analysis_in_upstream_projects.rst
index 5afbc18..8f35bc1 100644
--- a/Section_4_Gap_analysis_in_upstream_projects.rst
+++ b/Section_4_Gap_analysis_in_upstream_projects.rst
@@ -44,6 +44,29 @@ Monasca is an open-source monitoring-as-a-service (MONaaS) solution that integra
- Monasca does not support querying memory usage of Libvirt.
+4.2 Heat
+--------
+
+Heat is an orchestration project of openstack. It can be used for deploy application. Its cfn-hup tool can monitor metadata in VM and notify to heat. But this function is poor now, we can extend cfn-hup to collect more information inside VM and make failure prediction.
+
+4.2.1 Cfn-hup
+^^^^^^^^^^^^^
+
+* Type: 'monitoring issue'
+* Description:
+
+ + To-be
+
+ - Cfn-hup is able to collect more metrics than metadata inside VM. These metrics can be used for failure prediction.
+
+ + As-is:
+
+ - Cfn-hup just can monitor metadata inside VM.
+
+ + Gap
+
+ - Cfn-hup should monitor more information inside VM.
+
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