[ https://issues.apache.org/jira/browse/AMBARI-15892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aravindan Vijayan updated AMBARI-15892: --------------------------------------- Status: Patch Available (was: Open) > Incorrect (Negative) values are shown for memory metrics > -------------------------------------------------------- > > Key: AMBARI-15892 > URL: https://issues.apache.org/jira/browse/AMBARI-15892 > Project: Ambari > Issue Type: Bug > Reporter: Aravindan Vijayan > Assignee: Aravindan Vijayan > Priority: Blocker > Attachments: AMBARI-15892.patch > > > Issue > In the "NameNode HostLoad" graph, the negative values are seen for the > computed metric "Memory Utilization" which goes by the formula : > ( mem_total - (mem_free + mem_cache) ) *100 / mem_total > Bug > AMBARI-15448 changed the way memory metrics are being reported to AMS. This > lead to a double subtraction of mem_cached, thereby leading to a negative > value intermittently. > Fix > Change the widget to : > ( mem_total - mem_free ) *100 / mem_total -- This message was sent by Atlassian JIRA (v6.3.4#6332)