HFileCorruptionChecker (Apache HBase 1.1.7 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) 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