NoOpLogCloser (Apache Accumulo Server Base 2.1.0 API)

java.lang.Object
- org.apache.accumulo.server.manager.recovery.NoOpLogCloser

All Implemented Interfaces:

LogCloser
```
public class NoOpLogCloser
extends Object
implements LogCloser
```
HadoopLogCloser recovers leases in DistributedFileSystem implementations and does nothing in local FileSystem implementations. For other implementations HadoopLogCloser throws an exception. However, Accumulo could be used with other Hadoop compatible FileSystem implementations that do not support lease recovery and we should not throw an exception in this case. This LogCloser implementation supports that case. WARNING: USE AT YOUR OWN RISK! When using this class as the LogCloser, it's possible that WALog recovery will not work if the file system implementation needs some type of recovery to occur for files that were being written to, but not properly closed. To use this class, set the Property Property.MANAGER_WAL_CLOSER_IMPLEMENTATION to the full name of this class.

Constructor Summary

Constructors
Constructor Description

NoOpLogCloser()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`close(AccumuloConfiguration conf, org.apache.hadoop.conf.Configuration hadoopConf, VolumeManager fs, org.apache.hadoop.fs.Path path)`	Attempts to properly close a WALog

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

- Constructor Detail
  - NoOpLogCloser
```
public NoOpLogCloser()
```
- Method Detail
  - close
```
public long close(AccumuloConfiguration conf,
                  org.apache.hadoop.conf.Configuration hadoopConf,
                  VolumeManager fs,
                  org.apache.hadoop.fs.Path path)
           throws IOException
```
    Description copied from interface: LogCloser
    
    Attempts to properly close a WALog
    
    Specified by:
    
    close in interface LogCloser
    
    Parameters:
    
    conf - AccumuloConfiguration
    
    hadoopConf - Hadoop configuration
    
    fs - VolumeManager
    
    path - WALog file path
    
    Returns:
    
    amount of time to wait before retrying, 0 if succeeded
    
    Throws:
    
    IOException - exception closing walog