PreemptiveFastFailException (Apache HBase 1.4.11 API)

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
@InterfaceStability.Evolving
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 HConnectionManager will skip all retries and fast fail the operation.

See Also:
Serialized Form

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

Methods
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

- 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.

Class PreemptiveFastFailException

Constructor Summary

Method Summary

Methods inherited from class java.lang.Throwable

Methods inherited from class java.lang.Object

Constructor Detail

PreemptiveFastFailException

PreemptiveFastFailException

Method Detail

getFirstFailureAt

getLastAttemptAt

getFailureCount

wasOperationAttemptedByServer

isGuaranteedClientSideOnly