org.apache.hadoop.fs.azurebfs.services

Class AbfsRetryPolicy

java.lang.Object

org.apache.hadoop.fs.azurebfs.services.AbfsRetryPolicy

Direct Known Subclasses:

ExponentialRetryPolicy, StaticRetryPolicy

public abstract class AbfsRetryPolicy
extends Object

Abstract Class for Retry policy to be used by AbfsClient Implementation to be used is based on retry cause.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbfsRetryPolicy(int maxRetryCount, String retryPolicyAbbreviation)

Method Summary

Modifier and Type	Method and Description
String	getAbbreviation() Returns a String value of the abbreviation denoting which type of retry policy is used
protected int	getMaxRetryCount() Returns maximum number of retries allowed in this retry policy
abstract long	getRetryInterval(int retryCount) Returns backoff interval to be used for a particular retry count Child class should define how they want to calculate retry interval
boolean	shouldRetry(int retryCount, int statusCode) Returns if a request should be retried based on the retry count, current response, and the current strategy.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

AbfsRetryPolicy

protected AbfsRetryPolicy(int maxRetryCount,
                          String retryPolicyAbbreviation)

Method Detail

shouldRetry

public boolean shouldRetry(int retryCount,
                           int statusCode)

Returns if a request should be retried based on the retry count, current response, and the current strategy. The valid http status code lies in the range of 1xx-5xx. But an invalid status code might be set due to network or timeout kind of issues. Such invalid status code also qualify for retry.

Parameters:

retryCount - The current retry attempt count.

statusCode - The status code of the response, or -1 for socket error.

Returns:

true if the request should be retried; false otherwise.

getRetryInterval

public abstract long getRetryInterval(int retryCount)

Returns backoff interval to be used for a particular retry count Child class should define how they want to calculate retry interval

Parameters:

retryCount - The current retry attempt count.

Returns:

backoff Interval time

getAbbreviation

public String getAbbreviation()

Returns a String value of the abbreviation denoting which type of retry policy is used

Returns:

retry policy abbreviation

getMaxRetryCount

protected int getMaxRetryCount()

Returns maximum number of retries allowed in this retry policy

Returns:

max retry count

toString

public String toString()

Overrides:

toString in class Object