Public

calculateShouldScan

<init>

Disallow the scanner from scanning the given block pool.

disableBlockPoolId

Allow the scanner to scan the given block pool.

enableBlockPoolId

expireOldScannedBytesRecords

Find a usable block iterator. We will consider available block iterators in
order. This property is 

findNextUsableBlockIter

getStatistics

interrupt

markSuspectBlock

If there are elements in the suspectBlocks list, removes and returns the first
one. Otherwise, retur

popNextSuspectBlock

positiveMsToHours

printStats

Run an iteration of the VolumeScanner loop.

runLoop

saveBlockIterator

scanBlock

setConf

setDaemon

setName

shutdown

start

VolumeScanner

Making http post requests using okhttp

The Color class is used to encapsulate colors in the default sRGB color space or
colors in arbitrary

java.awt.Color

A generic Abstract Window Toolkit(AWT) container object is a component that can
contain other AWT co

java.awt.Container

A readable source of bytes.Most clients will use input streams that read data
from the file system (

java.io.InputStream

This class represents proxy server settings. A created instance of Proxy stores
a type and an addres

java.net.Proxy

An Executor that provides methods to manage termination and methods that can
produce a Future for tr

java.util.concurrent.ExecutorService

This is the main interface of a Quartz Scheduler. A Scheduler maintains a registry of org.quartz.Job

org.quartz.Scheduler

getSharedPreferences

getApplicationContext

getResourceAsStream

/**
   * Run an iteration of the VolumeScanner loop.
   *
   * @param suspectBlock   A suspect block which we should scan, or null to
   *                       scan the next regularly scheduled block.
   *
   * @return     The number of milliseconds to delay before running the loop
   *               again, or 0 to re-run the loop immediately.
   */

// If neededBytesPerSec is too low, then wait few seconds for some old

"{}: no block pools are ready to scan yet.  Waiting "

// There was an error listing the next block in the volume.  This is a

// On the next loop iteration, curBlockIter#eof will be set to true, and

// we will pick a different block iterator.

"{}: saving block iterator {} after {} ms."

How to use scanBlockmethodin org.apache.hadoop.hdfs.server.datanode.VolumeScanner

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How to use
scanBlock
method
in
org.apache.hadoop.hdfs.server.datanode.VolumeScanner