Druid Metadata API

http://${coordinator_host}:8081/druid/coordinator/v1/metadata/datasources

[
  "nn_jmx_metric_sandbox"
]

http://${coordinator_host}:8081/druid/coordinator/v1/metadata/datasources/nn_jmx_metric_sandbox

{
	name: "nn_jmx_metric_sandbox",
	properties: {
		created: "2016-02-18T08:43:03.377Z"
	},
	segments: [{
		dataSource: "nn_jmx_metric_sandbox",
		interval: "2016-01-23T05:00:00.000Z/2016-01-23T06:00:00.000Z",
		version: "2016-01-23T05:15:37.690Z",
		loadSpec: {
			type: "hdfs",
			path: "hdfs://hadoop-namenode-host:8020/druid/nn_jmx_metric_sandbox/20160123T050000.000Z_20160123T060000.000Z/2016-01-23T05_15_37.690Z/1/index.zip"
		},
		dimensions: "component,host,metric,site",
		metrics: "count,maxValue,approxValue",
		shardSpec: {
			type: "linear",
			partitionNum: 1
		},
		binaryVersion: 9,
		size: 260920,
		identifier: "nn_jmx_metric_sandbox_2016-01-23T05:00:00.000Z_2016-01-23T06:00:00.000Z_2016-01-23T05:15:37.690Z_1"
	}, {
		dataSource: "nn_jmx_metric_sandbox",
		interval: "2016-01-23T06:00:00.000Z/2016-01-23T07:00:00.000Z",
		version: "2016-01-23T05:15:37.690Z",
		loadSpec: {
			type: "hdfs",
			path: "hdfs://hadoop-namenode-host:8020/druid/nn_jmx_metric_sandbox/20160123T060000.000Z_20160123T070000.000Z/2016-01-23T05_15_37.690Z/1/index.zip"
		},
		dimensions: "component,host,metric,site",
		metrics: "count,maxValue,approxValue",
		shardSpec: {
			type: "linear",
			partitionNum: 1
		},
		binaryVersion: 9,
		size: 348927,
		identifier: "nn_jmx_metric_sandbox_2016-01-23T06:00:00.000Z_2016-01-23T07:00:00.000Z_2016-01-23T05:15:37.690Z_1"
	}, 
	...
  ]
}