[jira] [Created] (AMBARI-16695) HDFS Alerts: add minimum values to AMS alerts

["Siddharth Wagle (JIRA)" <ji...@apache.org>]

Siddharth Wagle created AMBARI-16695:
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             Summary: HDFS Alerts: add minimum values to AMS alerts
                 Key: AMBARI-16695
                 URL: https://issues.apache.org/jira/browse/AMBARI-16695
             Project: Ambari
          Issue Type: Improvement
            Reporter: Siddharth Wagle
            Assignee: Siddharth Wagle


There are new HDFS alerts that watch growth rates. Some (like RPC) have "minimum" values, meaning we ignore growth until we are past a certain value (like latency in seconds).

There are a few other alerts that I think also need minimums. Or maybe need higher warning thresholds. Or both...

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NameNode Heap Usage (Daily) increase_nn_heap_usage_daily

I'm getting these WARNINGS with a Heap of < 100MB.
{code}
The variance for this alert is 25MB which is 30% of the 82MB average (16MB is the limit).
{code}

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HDFS Storage Capacity Usage (Weekly) namenode_increase_in_storage_capacity_usage_weekly

I'm getting these WARNINGS when only using such a small amount of storage...

{code}
The variance for this alert is 21,328B which is 20% of the 107,758B average (10,776B is the limit)
{code}

Here is what is used...
{code}
Disk Usage (DFS Used) 	112.0 KB / 428.1 GB (0.00%)
Disk Usage (Non DFS Used) 	32.0 GB / 428.1 GB (7.47%)
{code}



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