HFileCorruptionChecker (Apache HBase 1.4.11 API)

java.lang.Object
- org.apache.hadoop.hbase.util.hbck.HFileCorruptionChecker

```
@InterfaceAudience.Private
public class HFileCorruptionChecker
extends Object
```
This class marches through all of the region's hfiles and verifies that they are all valid files. One just needs to instantiate the class, use checkTables(List<Path>) and then retrieve the corrupted hfiles (and quarantined files if in quarantining mode) The implementation currently parallelizes at the regionDir level.

Constructor Summary

Constructors
Constructor and Description
`HFileCorruptionChecker(org.apache.hadoop.conf.Configuration conf, ExecutorService executor, boolean quarantine)`

Method Summary

Methods
Modifier and Type	Method and Description
`protected void`	`checkColFamDir(org.apache.hadoop.fs.Path cfDir)` Check all files in a column family dir.
`protected void`	`checkHFile(org.apache.hadoop.fs.Path p)` Checks a path to see if it is a valid hfile.
`protected void`	`checkRegionDir(org.apache.hadoop.fs.Path regionDir)` Check all column families in a region dir.
`void`	`checkTables(Collection<org.apache.hadoop.fs.Path> tables)` Check the specified table dirs for bad hfiles.
`Collection<org.apache.hadoop.fs.Path>`	`getCorrupted()`
`Collection<org.apache.hadoop.fs.Path>`	`getFailures()`
`int`	`getHFilesChecked()`
`Collection<org.apache.hadoop.fs.Path>`	`getMissing()`
`Collection<org.apache.hadoop.fs.Path>`	`getQuarantined()`
`void`	`report(HBaseFsck.ErrorReporter out)` Print a human readable summary of hfile quarantining operations.

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

- Constructor Detail
  - HFileCorruptionChecker
```
public HFileCorruptionChecker(org.apache.hadoop.conf.Configuration conf,
                      ExecutorService executor,
                      boolean quarantine)
                       throws IOException
```
    Throws:
    
    IOException
- Method Detail
  - checkHFile
```
protected void checkHFile(org.apache.hadoop.fs.Path p)
                   throws IOException
```
    Checks a path to see if it is a valid hfile.
    
    Parameters:
    p - full Path to an HFile
    
    Throws:
    
    IOException - This is a connectivity related exception
  - checkColFamDir
```
protected void checkColFamDir(org.apache.hadoop.fs.Path cfDir)
                       throws IOException
```
    Check all files in a column family dir.
    
    Parameters:
    cfDir - column family directory
    
    Throws:
    
    IOException
  - checkRegionDir
```
protected void checkRegionDir(org.apache.hadoop.fs.Path regionDir)
                       throws IOException
```
    Check all column families in a region dir.
    
    Parameters:
    regionDir - region directory
    
    Throws:
    
    IOException
  - checkTables
```
public void checkTables(Collection<org.apache.hadoop.fs.Path> tables)
                 throws IOException
```
    Check the specified table dirs for bad hfiles.
    
    Throws:
    
    IOException
  - getFailures
```
public Collection<org.apache.hadoop.fs.Path> getFailures()
```
    Returns:
    the set of check failure file paths after checkTables is called.
  - getCorrupted
```
public Collection<org.apache.hadoop.fs.Path> getCorrupted()
```
    Returns:
    the set of corrupted file paths after checkTables is called.
  - getHFilesChecked
```
public int getHFilesChecked()
```
    Returns:
    number of hfiles checked in the last HfileCorruptionChecker run
  - getQuarantined
```
public Collection<org.apache.hadoop.fs.Path> getQuarantined()
```
    Returns:
    the set of successfully quarantined paths after checkTables is called.
  - getMissing
```
public Collection<org.apache.hadoop.fs.Path> getMissing()
```
    Returns:
    the set of paths that were missing. Likely due to deletion/moves from compaction or flushes.
  - report
```
public void report(HBaseFsck.ErrorReporter out)
```
    Print a human readable summary of hfile quarantining operations.
    
    Parameters:
    out -

Class HFileCorruptionChecker

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

HFileCorruptionChecker

Method Detail

checkHFile

checkColFamDir

checkRegionDir

checkTables

getFailures

getCorrupted

getHFilesChecked

getQuarantined

getMissing

report