MetricsWALSource (Apache HBase 1.2.12 API)

All Superinterfaces:

BaseSource

All Known Implementing Classes:

MetricsWALSourceImpl
```
public interface MetricsWALSource
extends BaseSource
```
Interface of the source that will export metrics about the region server's WAL.

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`APPEND_COUNT`
`static String`	`APPEND_COUNT_DESC`
`static String`	`APPEND_SIZE`
`static String`	`APPEND_SIZE_DESC`
`static String`	`APPEND_TIME`
`static String`	`APPEND_TIME_DESC`
`static String`	`LOW_REPLICA_ROLL_REQUESTED`
`static String`	`LOW_REPLICA_ROLL_REQUESTED_DESC`
`static String`	`METRICS_CONTEXT` The name of the metrics context that metrics will be under.
`static String`	`METRICS_DESCRIPTION` Description
`static String`	`METRICS_JMX_CONTEXT` The name of the metrics context that metrics will be under in jmx
`static String`	`METRICS_NAME` The name of the metrics
`static String`	`ROLL_REQUESTED`
`static String`	`ROLL_REQUESTED_DESC`
`static String`	`SLOW_APPEND_COUNT`
`static String`	`SLOW_APPEND_COUNT_DESC`
`static String`	`SYNC_TIME`
`static String`	`SYNC_TIME_DESC`

Fields inherited from interface org.apache.hadoop.hbase.metrics.BaseSource
HBASE_METRICS_SYSTEM_NAME

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`incrementAppendCount()` Increment the count of wal appends
`void`	`incrementAppendSize(long size)` Add the append size.
`void`	`incrementAppendTime(long time)` Add the time it took to append.
`void`	`incrementLogRollRequested()`
`void`	`incrementLowReplicationLogRoll()`
`void`	`incrementSlowAppendCount()` Increment the number of appends that were slow
`void`	`incrementSyncTime(long time)` Add the time it took to sync the wal.

Methods inherited from interface org.apache.hadoop.hbase.metrics.BaseSource
decGauge, getMetricsContext, getMetricsDescription, getMetricsJmxContext, getMetricsName, incCounters, incGauge, init, removeMetric, setGauge, updateHistogram, updateQuantile

- Field Detail
  - METRICS_NAME
```
static final String METRICS_NAME
```
    The name of the metrics
    
    See Also:
    Constant Field Values
  - METRICS_CONTEXT
```
static final String METRICS_CONTEXT
```
    The name of the metrics context that metrics will be under.
    
    See Also:
    Constant Field Values
  - METRICS_DESCRIPTION
```
static final String METRICS_DESCRIPTION
```
    Description
    
    See Also:
    Constant Field Values
  - METRICS_JMX_CONTEXT
```
static final String METRICS_JMX_CONTEXT
```
    The name of the metrics context that metrics will be under in jmx
    
    See Also:
    Constant Field Values
  - APPEND_TIME
```
static final String APPEND_TIME
```
    See Also:
    Constant Field Values
  - APPEND_TIME_DESC
```
static final String APPEND_TIME_DESC
```
    See Also:
    Constant Field Values
  - APPEND_COUNT
```
static final String APPEND_COUNT
```
    See Also:
    Constant Field Values
  - APPEND_COUNT_DESC
```
static final String APPEND_COUNT_DESC
```
    See Also:
    Constant Field Values
  - APPEND_SIZE
```
static final String APPEND_SIZE
```
    See Also:
    Constant Field Values
  - APPEND_SIZE_DESC
```
static final String APPEND_SIZE_DESC
```
    See Also:
    Constant Field Values
  - SLOW_APPEND_COUNT
```
static final String SLOW_APPEND_COUNT
```
    See Also:
    Constant Field Values
  - SLOW_APPEND_COUNT_DESC
```
static final String SLOW_APPEND_COUNT_DESC
```
    See Also:
    Constant Field Values
  - SYNC_TIME
```
static final String SYNC_TIME
```
    See Also:
    Constant Field Values
  - SYNC_TIME_DESC
```
static final String SYNC_TIME_DESC
```
    See Also:
    Constant Field Values
  - ROLL_REQUESTED
```
static final String ROLL_REQUESTED
```
    See Also:
    Constant Field Values
  - ROLL_REQUESTED_DESC
```
static final String ROLL_REQUESTED_DESC
```
    See Also:
    Constant Field Values
  - LOW_REPLICA_ROLL_REQUESTED
```
static final String LOW_REPLICA_ROLL_REQUESTED
```
    See Also:
    Constant Field Values
  - LOW_REPLICA_ROLL_REQUESTED_DESC
```
static final String LOW_REPLICA_ROLL_REQUESTED_DESC
```
    See Also:
    Constant Field Values
- Method Detail
  - incrementAppendSize
```
void incrementAppendSize(long size)
```
    Add the append size.
  - incrementAppendTime
```
void incrementAppendTime(long time)
```
    Add the time it took to append.
  - incrementAppendCount
```
void incrementAppendCount()
```
    Increment the count of wal appends
  - incrementSlowAppendCount
```
void incrementSlowAppendCount()
```
    Increment the number of appends that were slow
  - incrementSyncTime
```
void incrementSyncTime(long time)
```
    Add the time it took to sync the wal.
  - incrementLogRollRequested
```
void incrementLogRollRequested()
```
  - incrementLowReplicationLogRoll
```
void incrementLowReplicationLogRoll()
```

Interface MetricsWALSource

Field Summary

Fields inherited from interface org.apache.hadoop.hbase.metrics.BaseSource

Method Summary

Methods inherited from interface org.apache.hadoop.hbase.metrics.BaseSource

Field Detail

METRICS_NAME

METRICS_CONTEXT

METRICS_DESCRIPTION

METRICS_JMX_CONTEXT

APPEND_TIME

APPEND_TIME_DESC

APPEND_COUNT

APPEND_COUNT_DESC

APPEND_SIZE

APPEND_SIZE_DESC

SLOW_APPEND_COUNT

SLOW_APPEND_COUNT_DESC

SYNC_TIME

SYNC_TIME_DESC

ROLL_REQUESTED

ROLL_REQUESTED_DESC

LOW_REPLICA_ROLL_REQUESTED

LOW_REPLICA_ROLL_REQUESTED_DESC

Method Detail

incrementAppendSize

incrementAppendTime

incrementAppendCount

incrementSlowAppendCount

incrementSyncTime

incrementLogRollRequested

incrementLowReplicationLogRoll