diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md b/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md index 4543facc44..367d9e0b25 100644 --- a/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md +++ b/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md @@ -179,8 +179,8 @@ Each metrics record contains tags such as ProcessName, SessionId, and Hostname a | `GenerateEDEKTimeAvgTime` | Average time of generating EDEK in milliseconds | | `WarmUpEDEKTimeNumOps` | Total number of warming up EDEK | | `WarmUpEDEKTimeAvgTime` | Average time of warming up EDEK in milliseconds | -| `ResourceCheckTime`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of NameNode resource check latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | -| `StorageBlockReport`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of storage block report latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | +| `ResourceCheckTime`*num*`s(50/75/90/95/99)thPercentileLatency` | The 50/75/90/95/99th percentile of NameNode resource check latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | +| `StorageBlockReport`*num*`s(50/75/90/95/99)thPercentileLatency` | The 50/75/90/95/99th percentile of storage block report latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | FSNamesystem ------------ @@ -240,8 +240,8 @@ Each metrics record contains tags such as HAState and Hostname as additional inf | `NumInMaintenanceLiveDataNodes` | Number of live Datanodes which are in maintenance state | | `NumInMaintenanceDeadDataNodes` | Number of dead Datanodes which are in maintenance state | | `NumEnteringMaintenanceDataNodes` | Number of Datanodes that are entering the maintenance state | -| `FSN(Read|Write)Lock`*OperationName*`NumOps` | Total number of acquiring lock by operations | -| `FSN(Read|Write)Lock`*OperationName*`AvgTime` | Average time of holding the lock by operations in milliseconds | +| `FSN(Read/Write)Lock`*OperationName*`NumOps` | Total number of acquiring lock by operations | +| `FSN(Read/Write)Lock`*OperationName*`AvgTime` | Average time of holding the lock by operations in milliseconds | JournalNode ----------- @@ -308,13 +308,13 @@ Each metrics record contains tags such as SessionId and Hostname as additional i | `RamDiskBlocksEvictedWithoutRead` | Total number of blocks evicted in memory without ever being read from memory | | `RamDiskBlocksEvictionWindowMsNumOps` | Number of blocks evicted in memory| | `RamDiskBlocksEvictionWindowMsAvgTime` | Average time of blocks in memory before being evicted in milliseconds | -| `RamDiskBlocksEvictionWindows`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of latency between memory write and eviction in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | +| `RamDiskBlocksEvictionWindows`*num*`s(50/75/90/95/99)thPercentileLatency` | The 50/75/90/95/99th percentile of latency between memory write and eviction in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | | `RamDiskBlocksLazyPersisted` | Total number of blocks written to disk by lazy writer | | `RamDiskBlocksDeletedBeforeLazyPersisted` | Total number of blocks deleted by application before being persisted to disk | | `RamDiskBytesLazyPersisted` | Total number of bytes written to disk by lazy writer | | `RamDiskBlocksLazyPersistWindowMsNumOps` | Number of blocks written to disk by lazy writer | | `RamDiskBlocksLazyPersistWindowMsAvgTime` | Average time of blocks written to disk by lazy writer in milliseconds | -| `RamDiskBlocksLazyPersistWindows`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of latency between memory write and disk persist in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | +| `RamDiskBlocksLazyPersistWindows`*num*`s(50/75/90/95/99)thPercentileLatency` | The 50/75/90/95/99th percentile of latency between memory write and disk persist in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | | `FsyncCount` | Total number of fsync | | `VolumeFailures` | Total number of volume failures occurred | | `ReadBlockOpNumOps` | Total number of read operations | @@ -380,23 +380,23 @@ contains tags such as Hostname as additional information along with metrics. | `TotalMetadataOperations` | Total number (monotonically increasing) of metadata operations. Metadata operations include stat, list, mkdir, delete, move, open and posix_fadvise. | | `MetadataOperationRateNumOps` | The number of metadata operations within an interval time of metric | | `MetadataOperationRateAvgTime` | Mean time of metadata operations in milliseconds | -| `MetadataOperationLatency`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of metadata operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | +| `MetadataOperationLatency`*num*`s(50/75/90/95/99)thPercentileLatency` | The 50/75/90/95/99th percentile of metadata operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | | `TotalDataFileIos` | Total number (monotonically increasing) of data file io operations | | `DataFileIoRateNumOps` | The number of data file io operations within an interval time of metric | | `DataFileIoRateAvgTime` | Mean time of data file io operations in milliseconds | -| `DataFileIoLatency`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of data file io operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | +| `DataFileIoLatency`*num*`s(50/75/90/95/99)thPercentileLatency` | The 50/75/90/95/99th percentile of data file io operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | | `FlushIoRateNumOps` | The number of file flush io operations within an interval time of metric | | `FlushIoRateAvgTime` | Mean time of file flush io operations in milliseconds | -| `FlushIoLatency`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of file flush io operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | +| `FlushIoLatency`*num*`s(50/75/90/95/99)thPercentileLatency` | The 50/75/90/95/99th percentile of file flush io operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | | `SyncIoRateNumOps` | The number of file sync io operations within an interval time of metric | | `SyncIoRateAvgTime` | Mean time of file sync io operations in milliseconds | -| `SyncIoLatency`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of file sync io operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | +| `SyncIoLatency`*num*`s(50/75/90/95/99)thPercentileLatency` | The 50/75/90/95/99th percentile of file sync io operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | | `ReadIoRateNumOps` | The number of file read io operations within an interval time of metric | | `ReadIoRateAvgTime` | Mean time of file read io operations in milliseconds | -| `ReadIoLatency`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of file read io operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | +| `ReadIoLatency`*num*`s(50/75/90/95/99)thPercentileLatency` | The 50/75/90/95/99th percentile of file read io operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | | `WriteIoRateNumOps` | The number of file write io operations within an interval time of metric | | `WriteIoRateAvgTime` | Mean time of file write io operations in milliseconds | -| `WriteIoLatency`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of file write io operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | +| `WriteIoLatency`*num*`s(50/75/90/95/99)thPercentileLatency` | The 50/75/90/95/99th percentile of file write io operations latency in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. | | `TotalFileIoErrors` | Total number (monotonically increasing) of file io error operations | | `FileIoErrorRateNumOps` | The number of file io error operations within an interval time of metric | | `FileIoErrorRateAvgTime` | It measures the mean time in milliseconds from the start of an operation to hitting a failure |