I'm trying to work on sending a custom metric to the Ambari Metric collector. I've been following this extremely helpful blog. http://bryanbende.com/development/2015/07/31/ambari-metrics-part1-metrics-collector Whenever I make a POST, however, I get a response 500 with this error: "com.sun.jersey.api.MessageException: A message body reader for Java class org.apache.hadoop.metrics2.sink.timeline.TimelineMetrics, and Java type class org.apache.hadoop.metrics2.sink.timeline.TimelineMetrics, and MIME media type application/octet-stream was not found."
Followed by a list of compatible readers. Here's what I'm posting (except as a string with no whitespace) - it's pulled straight from the example here https://cwiki.apache.org/confluence/display/AMBARI/Metrics+Collector+API+Specification {
"metrics": [
{
"metricname": "AMBARI_METRICS.SmokeTest.FakeMetric",
"appid": "amssmoketestfake",
"hostname": "ambari20-5.c.pramod-thangali.internal",
"timestamp": 1432075898000,
"starttime": 1432075898000,
"metrics": {
"1432075898000": 0.963781711428,
"1432075899000": 1432075898000
}
}
]
} The url I'm pointing at is http://<metrics-collector-host>:6188/ws/v1/timeline/metrics/ A few things I've tried:
POSTing to both on the cluster I made from VMs to experiment with and with the official Hortonworks sandbox (as suggested in Bryan's tutorial - making sure port forwarding is set up). Neither works. Restarting Ambari Metrics Having Ambari Metrics run it's service check, which, from what I can tell, posts and gets a dummy metric. It worked fine. Doing a GET request. Get requests are successful and do return the requested metrics. Sending the POST from my local machine, the primary VM, and the VM that the metrics collector lives on. Editing the "hostname" field in the json doc to match what machine I'm sending from (though that seems as though it shouldn't matter) Thanks in advance! James
... View more
