Figure 8. Hadoop Applications Metrics Dashboard
●
Hadoop Cluster Metrics - Displays graphs representing statistical data related to Hadoop components, such
as HDFS Data Nodes and HDFS Name Nodes.
This dashboard contains the following sections:
○
Cluster BlockReceivedAndDeletedAvgTime - Displays the average time in milliseconds for the hdfs
cluster to send and receive blocks. The Y-axis represents time in milliseconds.
○
NumActive Node Manager - Displays the number of Node Managers up and running in the Hadoop
cluster at a given time. The Y-axis represents a linear number.
○
AllocatedContainers - Displays the number of allocated YARN containers by all the jobs in the hadoop
cluster. The Y-axis represents a linear number.
○
DataNode Bytes Read/Write - Displays the number of bytes read or write per node from local client in
the hadoop cluster. The Y-axis refers to a linear number. Read is shown on the positive scale. Write is
shown on the negative scale.
○
Data Node Remote bytes Read/Written - Displays the number of bytes read or written per node from
remote clients in the Hadoop cluster. The Y-axis represents a linear number. The number of reads are
shown on the positive scale. The number of writes are shown on the negative scale.
System Monitoring
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