org.apache.hadoop.hbase.exceptions

Class PreemptiveFastFailException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.io.IOException

java.net.SocketException

java.net.ConnectException

org.apache.hadoop.hbase.exceptions.PreemptiveFastFailException

All Implemented Interfaces:

Serializable

@InterfaceAudience.Public
public class PreemptiveFastFailException
extends ConnectException

Thrown when the client believes that we are trying to communicate to has been repeatedly unresponsive for a while. On receiving such an exception. The ConnectionManager will skip all retries and fast fail the operation.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private long	failureCount
private boolean	guaranteedClientSideOnly
private static long	serialVersionUID
private long	timeOfFirstFailureMilliSec
private long	timeOfLatestAttemptMilliSec

Constructor Summary

Constructors

Constructor and Description
PreemptiveFastFailException(long count, long timeOfFirstFailureMilliSec, long timeOfLatestAttemptMilliSec, ServerName serverName)
PreemptiveFastFailException(long count, long timeOfFirstFailureMilliSec, long timeOfLatestAttemptMilliSec, ServerName serverName, boolean guaranteedClientSideOnly)

Method Summary

Modifier and Type	Method and Description
long	getFailureCount()
long	getFirstFailureAt()
long	getLastAttemptAt()
boolean	isGuaranteedClientSideOnly()
boolean	wasOperationAttemptedByServer()

Methods inherited from class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

failureCount

private long failureCount

timeOfFirstFailureMilliSec

private long timeOfFirstFailureMilliSec

timeOfLatestAttemptMilliSec

private long timeOfLatestAttemptMilliSec

guaranteedClientSideOnly

private boolean guaranteedClientSideOnly

Constructor Detail

PreemptiveFastFailException

public PreemptiveFastFailException(long count,
                                   long timeOfFirstFailureMilliSec,
                                   long timeOfLatestAttemptMilliSec,
                                   ServerName serverName)

Parameters:

count - num of consecutive failures

timeOfFirstFailureMilliSec - when first failure happened

timeOfLatestAttemptMilliSec - when last attempt happened

serverName - server we failed to connect to

PreemptiveFastFailException

public PreemptiveFastFailException(long count,
                                   long timeOfFirstFailureMilliSec,
                                   long timeOfLatestAttemptMilliSec,
                                   ServerName serverName,
                                   boolean guaranteedClientSideOnly)

Parameters:

count - num of consecutive failures

timeOfFirstFailureMilliSec - when first failure happened

timeOfLatestAttemptMilliSec - when last attempt happened

serverName - server we failed to connect to

guaranteedClientSideOnly - if true, guarantees that no mutations have been applied on the server

Method Detail

getFirstFailureAt

public long getFirstFailureAt()

Returns:

time of the fist failure

getLastAttemptAt

public long getLastAttemptAt()

Returns:

time of the latest attempt

getFailureCount

public long getFailureCount()

Returns:

failure count

wasOperationAttemptedByServer

public boolean wasOperationAttemptedByServer()

Returns:

true if operation was attempted by server, false otherwise.

isGuaranteedClientSideOnly

public boolean isGuaranteedClientSideOnly()

Returns:

true if we know no mutation made it to the server, false otherwise.