60 lines
2.0 KiB
Markdown
60 lines
2.0 KiB
Markdown
# Hadoop Metrics
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The JMX Metric Gatherer provides built in Hadoop metric gathering capabilities.
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These metrics are sourced from: https://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-common/Metrics.html
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### Name Node Metrics
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* Name: `hadoop.name_node.capacity.usage`
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* Description: The current used capacity across all data nodes reporting to the name node.
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* Unit: `by`
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* Labels: `node_name`
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* Instrument Type: LongUpDownCounterCallback
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* Name: `hadoop.name_node.capacity.limit`
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* Description: The total capacity allotted to data nodes reporting to the name node.
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* Unit: `by`
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* Labels: `node_name`
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* Instrument Type: LongUpDownCounterCallback
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* Name: `hadoop.name_node.block.count`
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* Description: The total number of blocks on the name node.
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* Unit: `{blocks}`
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* Labels: `node_name`
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* Instrument Type: LongUpDownCounterCallback
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* Name: `hadoop.name_node.block.missing`
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* Description: The number of blocks reported as missing to the name node.
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* Unit: `{blocks}`
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* Labels: `node_name`
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* Instrument Type: LongUpDownCounterCallback
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* Name: `hadoop.name_node.block.corrupt`
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* Description: The number of blocks reported as corrupt to the name node.
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* Unit: `{blocks}`
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* Labels: `node_name`
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* Instrument Type: LongUpDownCounterCallback
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* Name: `hadoop.name_node.volume.failed`
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* Description: The number of failed volumes reported to the name node.
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* Unit: `{volumes}`
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* Labels: `node_name`
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* Instrument Type: LongUpDownCounterCallback
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* Name: `hadoop.name_node.file.count`
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* Description: The total number of files being tracked by the name node.
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* Unit: `{files}`
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* Labels: `node_name`
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* Instrument Type: LongUpDownCounterCallback
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* Name: `hadoop.name_node.file.load`
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* Description: The current number of concurrent file accesses.
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* Unit: `{operations}`
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* Labels: `node_name`
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* Instrument Type: LongUpDownCounterCallback
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* Name: `hadoop.name_node.data_node.count`
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* Description: The number of data nodes reporting to the name node.
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* Unit: `{nodes}`
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* Labels: `node_name`, `state`
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* Instrument Type: LongUpDownCounterCallback
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