StorefileRefresherChore (Apache HBase 1.2.12 API)

java.lang.Object
- org.apache.hadoop.hbase.ScheduledChore
- - org.apache.hadoop.hbase.regionserver.StorefileRefresherChore

All Implemented Interfaces:

Runnable
```
@InterfaceAudience.Private
public class StorefileRefresherChore
extends ScheduledChore
```
A chore for refreshing the store files for secondary regions hosted in the region server. This chore should run periodically with a shorter interval than HFile TTL ("hbase.master.hfilecleaner.ttl", default 5 minutes). It ensures that if we cannot refresh files longer than that amount, the region will stop serving read requests because the referenced files might have been deleted (by the primary region).

Field Summary

Fields
Modifier and Type	Field and Description
`(package private) static int`	`DEFAULT_REGIONSERVER_STOREFILE_REFRESH_PERIOD`
`private long`	`hfileTtl`
`private Map<String,Long>`	`lastRefreshTimes`
`private static org.apache.commons.logging.Log`	`LOG`
`private boolean`	`onlyMetaRefresh`
`private int`	`period`
`private HRegionServer`	`regionServer`
`static String`	`REGIONSERVER_META_STOREFILE_REFRESH_PERIOD` Whether all storefiles should be refreshed, as opposed to just hbase:meta's Meta region doesn't have WAL replication for replicas enabled yet
`static String`	`REGIONSERVER_STOREFILE_REFRESH_PERIOD` The period (in milliseconds) for refreshing the store files for the secondary regions.

Constructor Summary

Constructors
Constructor and Description
`StorefileRefresherChore(int period, boolean onlyMetaRefresh, HRegionServer regionServer, Stoppable stoppable)`

Method Summary

Methods
Modifier and Type	Method and Description
`protected void`	`chore()` The task to execute on each scheduled execution of the Chore
`protected boolean`	`isRegionStale(String encodedName, long time)`

Methods inherited from class org.apache.hadoop.hbase.ScheduledChore
cancel, cancel, choreForTesting, cleanup, getInitialDelay, getName, getPeriod, getStopper, getTimeUnit, initialChore, isInitialChoreComplete, isScheduled, run, toString, triggerNow

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

Field Detail
- LOG
```
private static final org.apache.commons.logging.Log LOG
```
- REGIONSERVER_STOREFILE_REFRESH_PERIOD
```
public static final String REGIONSERVER_STOREFILE_REFRESH_PERIOD
```
  The period (in milliseconds) for refreshing the store files for the secondary regions.
  
  See Also:
  Constant Field Values
- DEFAULT_REGIONSERVER_STOREFILE_REFRESH_PERIOD
```
static final int DEFAULT_REGIONSERVER_STOREFILE_REFRESH_PERIOD
```
  See Also:
  Constant Field Values
- REGIONSERVER_META_STOREFILE_REFRESH_PERIOD
```
public static final String REGIONSERVER_META_STOREFILE_REFRESH_PERIOD
```
  Whether all storefiles should be refreshed, as opposed to just hbase:meta's Meta region doesn't have WAL replication for replicas enabled yet
  
  See Also:
  Constant Field Values
- regionServer
```
private HRegionServer regionServer
```
- hfileTtl
```
private long hfileTtl
```
- period
```
private int period
```
- onlyMetaRefresh
```
private boolean onlyMetaRefresh
```
- lastRefreshTimes
```
private Map<String,Long> lastRefreshTimes
```

Constructor Detail

StorefileRefresherChore

public StorefileRefresherChore(int period,
                       boolean onlyMetaRefresh,
                       HRegionServer regionServer,
                       Stoppable stoppable)

Method Detail
- chore
```
protected void chore()
```
  Description copied from class: ScheduledChore
  
  The task to execute on each scheduled execution of the Chore
  
  Specified by:
  
  chore in class ScheduledChore
- isRegionStale
```
protected boolean isRegionStale(String encodedName,
                    long time)
```

Class StorefileRefresherChore

Field Summary

Constructor Summary

Method Summary

Methods inherited from class org.apache.hadoop.hbase.ScheduledChore

Methods inherited from class java.lang.Object

Field Detail

LOG

REGIONSERVER_STOREFILE_REFRESH_PERIOD

DEFAULT_REGIONSERVER_STOREFILE_REFRESH_PERIOD

REGIONSERVER_META_STOREFILE_REFRESH_PERIOD

regionServer

hfileTtl

period

onlyMetaRefresh

lastRefreshTimes

Constructor Detail

StorefileRefresherChore

Method Detail

chore

isRegionStale