MailOptionsImpl (Flink : Core 2.1.1-cp1 API)

java.lang.Object
- org.apache.flink.api.common.operators.MailOptionsImpl

All Implemented Interfaces:

MailboxExecutor.MailOptions
```
@Internal
public class MailOptionsImpl
extends Object
implements MailboxExecutor.MailOptions
```
Options to configure behaviour of executing mailbox mails.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isDeferrable()`	Runtime can decide to defer execution of deferrable mails.
`boolean`	`isUrgent()`	The urgent mail will be executed first compared to other mails.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - isDeferrable
```
public boolean isDeferrable()
```
    Description copied from interface: MailboxExecutor.MailOptions
    
    Runtime can decide to defer execution of deferrable mails. For example, to unblock subtask thread as quickly as possible, deferrable mails are not executed during MailboxExecutor.yield() or MailboxExecutor.tryYield(). This is done to speed up checkpointing, by skipping execution of potentially long-running mails.
    
    Specified by:
    
    isDeferrable in interface MailboxExecutor.MailOptions
  - isUrgent
```
public boolean isUrgent()
```
    Description copied from interface: MailboxExecutor.MailOptions
    
    The urgent mail will be executed first compared to other mails. For example, handling unaligned checkpoint barrier or some control mails are expected to be executed as soon as possible.
    
    Specified by:
    
    isUrgent in interface MailboxExecutor.MailOptions