TimeRangeTracker (Apache HBase 1.2.12 API)

java.lang.Object
- org.apache.hadoop.hbase.regionserver.TimeRangeTracker

All Implemented Interfaces:

org.apache.hadoop.io.Writable
```
@InterfaceAudience.Private
public class TimeRangeTracker
extends Object
implements org.apache.hadoop.io.Writable
```
Stores the minimum and maximum timestamp values (both are inclusive). Can be used to find if any given time range overlaps with its time range MemStores use this class to track its minimum and maximum timestamps. When writing StoreFiles, this information is stored in meta blocks and used at read time to match against the required TimeRange.

Field Summary

Fields
Modifier and Type Field and Description

(package private) static long INITIAL_MINIMUM_TIMESTAMP

(package private) long maximumTimestamp

(package private) long minimumTimestamp

Fields
Modifier and Type	Field and Description
`(package private) static long`	`INITIAL_MINIMUM_TIMESTAMP`
`(package private) long`	`maximumTimestamp`
`(package private) long`	`minimumTimestamp`

Constructor Summary

Constructors
Constructor and Description
`TimeRangeTracker()` Default constructor.
`TimeRangeTracker(long minimumTimestamp, long maximumTimestamp)`
`TimeRangeTracker(TimeRangeTracker trt)` Copy Constructor

Method Summary

Methods
Modifier and Type	Method and Description
`long`	`getMaximumTimestamp()`
`long`	`getMinimumTimestamp()`
`boolean`	`includesTimeRange(TimeRange tr)` Check if the range has any overlap with TimeRange
`void`	`includeTimestamp(Cell cell)` Update the current TimestampRange to include the timestamp from Cell If the Key is of type DeleteColumn or DeleteFamily, it includes the entire time range from 0 to timestamp of the key.
`(package private) void`	`includeTimestamp(long timestamp)` If required, update the current TimestampRange to include timestamp
`private boolean`	`init(long l)`
`void`	`readFields(DataInput in)`
`private void`	`set(long min, long max)`
`String`	`toString()`
`void`	`write(DataOutput out)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - INITIAL_MINIMUM_TIMESTAMP
```
static final long INITIAL_MINIMUM_TIMESTAMP
```
    See Also:
    Constant Field Values
  - minimumTimestamp
```
long minimumTimestamp
```
  - maximumTimestamp
```
long maximumTimestamp
```
- Constructor Detail
  - TimeRangeTracker
```
public TimeRangeTracker()
```
    Default constructor. Initializes TimeRange to be null
  - TimeRangeTracker
```
public TimeRangeTracker(TimeRangeTracker trt)
```
    Copy Constructor
    
    Parameters:
    trt - source TimeRangeTracker
  - TimeRangeTracker
```
public TimeRangeTracker(long minimumTimestamp,
                long maximumTimestamp)
```
- Method Detail
  - set
```
private void set(long min,
       long max)
```
  - init
```
private boolean init(long l)
```
    Parameters:
    l -
    
    Returns:
    True if we initialized values
  - includeTimestamp
```
public void includeTimestamp(Cell cell)
```
    Update the current TimestampRange to include the timestamp from Cell If the Key is of type DeleteColumn or DeleteFamily, it includes the entire time range from 0 to timestamp of the key.
    
    Parameters:
    cell - the Cell to include
  - includeTimestamp
```
void includeTimestamp(long timestamp)
```
    If required, update the current TimestampRange to include timestamp
    
    Parameters:
    timestamp - the timestamp value to include
  - includesTimeRange
```
public boolean includesTimeRange(TimeRange tr)
```
    Check if the range has any overlap with TimeRange
    
    Parameters:
    tr - TimeRange
    
    Returns:
    True if there is overlap, false otherwise
  - getMinimumTimestamp
```
public long getMinimumTimestamp()
```
    Returns:
    the minimumTimestamp
  - getMaximumTimestamp
```
public long getMaximumTimestamp()
```
    Returns:
    the maximumTimestamp
  - write
```
public void write(DataOutput out)
           throws IOException
```
    Specified by:
    
    write in interface org.apache.hadoop.io.Writable
    
    Throws:
    
    IOException
  - readFields
```
public void readFields(DataInput in)
                throws IOException
```
    Specified by:
    
    readFields in interface org.apache.hadoop.io.Writable
    
    Throws:
    
    IOException
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class TimeRangeTracker

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

INITIAL_MINIMUM_TIMESTAMP

minimumTimestamp

maximumTimestamp

Constructor Detail

TimeRangeTracker

TimeRangeTracker

TimeRangeTracker

Method Detail

set

init

includeTimestamp

includeTimestamp

includesTimeRange

getMinimumTimestamp

getMaximumTimestamp

write

readFields

toString