JMX监控Hadoop的部分常用参数位置

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近期版本get无法使用，可能使用了其他参数代替，但源码中已经去掉JMX部分，也没有给出替代接口，应该是不再额外实现了。

• NameNode
• DataNode
• HDFS
• Yarn
• HBase
• MapReduce

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NameNode

NameNode:50070

Hadoop:service=NameNode,name=JvmMetrics

• MemHeapMaxM
• MemMaxM

Hadoop:service=NameNode,name=FSNamesystem

• CapacityTotal
• CapacityTotalGB
• CapacityRemaining
• CapacityRemainingGB
• TotalLoad
• FilesTotal

Hadoop:service=NameNode,name=FSNamesystemState

• NumLiveDataNodes

Hadoop:service=NameNode,name=NameNodeInfo

• LiveNodes

java.lang:type=Runtime

• StartTime

Hadoop:service=NameNode,name=FSNamesystemState

• TopUserOpCounts:timestamp

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DataNode

DataNode:50075

Hadoop:service=DataNode,name=DataNodeActivity-slave-50010

• BytesWritten
• BytesRead
• BlocksWritten
• BlocksRead
• ReadsFromLocalClient
• ReadsFromRemoteClient
• WritesFromLocalClient
• WritesFromRemoteClient
• BlocksGetLocalPathInfo

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HDFS

NameNode:50070

Hadoop:service=NameNode,name=NameNodeActivity

• CreateFileOps
• FilesCreated
• FilesAppended
• FilesRenamed
• GetListingOps
• DeleteFileOps
• FilesDeleted

Hadoop:service=NameNode,name=FSNamesystem

• CapacityTotal
• CapacityTotalGB
• CapacityUsed
• CapacityUsedGB
• CapacityRemaining
• CapacityRemainingGB
• CapacityUsedNonDFS

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Yarn

ResourceManager:8088

Hadoop:service=ResourceManager,name=ClusterMetrics

• NumActiveNMs
• NumDecommissionedNMs

Hadoop:service=ResourceManager,name=JvmMetrics

• MemHeapUsedM