array ( array ( 'url' => 'http://%GangliaWebHostName%:%GangliaWebPort%/ganglia/graph.php?c=%HDFSSlavesClusterName%&g=hdp_mon_hdfs_io_report', 'title' => 'HDFS I/O', 'description' => 'Bytes written to and read from HDFS, aggregated across all the DataNodes', 'link' => 'http://%GangliaWebHostName%:%GangliaWebPort%/ganglia/?c=%NameNodeClusterName%' ), array ( 'url' => 'http://%GangliaWebHostName%:%GangliaWebPort%/ganglia/graph.php?c=%NameNodeClusterName%&g=hdp_mon_hdfs_ops_report', 'title' => 'NameNode Operation Counts', 'description' => 'Counts of key operations on the NameNode, to give a feel for the high-level HDFS activity pattern', 'link' => 'http://%GangliaWebHostName%:%GangliaWebPort%/ganglia/?c=%NameNodeClusterName%' ), array ( 'url' => 'http://%GangliaWebHostName%:%GangliaWebPort%/ganglia/graph.php?c=%NameNodeClusterName%&g=hdp_mon_jvm_gc_report', 'title' => 'NameNode: JVM Garbage Collection', 'description' => 'Key Garbage Collection stats for the NameNode\'s JVM', 'link' => 'http://%GangliaWebHostName%:%GangliaWebPort%/ganglia/?c=%NameNodeClusterName%' ), array ( 'url' => 'http://%GangliaWebHostName%:%GangliaWebPort%/ganglia/graph.php?c=%NameNodeClusterName%&g=hdp_mon_rpc_latency_report', 'title' => 'NameNode: RPC Average Latencies', 'description' => 'Average latencies for processing and queue times on the NameNode, to give a feel for potential performance bottlenecks', 'link' => 'http://%GangliaWebHostName%:%GangliaWebPort%/ganglia/?c=%NameNodeClusterName%' ) ) ); echo json_encode($data); ?>