ambari/contrib/addons/test/ui/json/hdfsSummary.json

{
    "hdfs": {
        "service_type": "HDFS",
        "namenode_addr": "nnhost:50070",
        "total_nodes": 10,
        "live_nodes": 8,
        "dead_nodes": 1,
        "decommissioned_nodes": 1,
        "start_time": 23235351,
        "pending_upgrades": false,
        "version": "1.0.0, r1234555555555555555555555555555555555555333333333",
        "safemode": false,
        "memory_heap_committed": 100131233,
        "memory_heap_total": 800212312,
        "dfs_configured_capacity": 1234456545644,
        "dfs_percent_used": 24,
        "dfs_percent_remaining": 76,
        "dfs_blocks_total": 100113,
        "dfs_blocks_underreplicated": 0,
        "dfs_blocks_missing": 0,
        "dfs_blocks_corrupt": 0,
        "dfs_dirfiles_count": 1045
    }
}