MailboxExecutor.MailOptions (Flink : Core 2.1.1-cp2 API)

All Known Implementing Classes:

MailOptionsImpl

Enclosing interface:

MailboxExecutor
```
@PublicEvolving
public static interface MailboxExecutor.MailOptions
```
Extra options to configure enqueued mails.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static MailboxExecutor.MailOptions`	`deferrable()`	Mark this mail as deferrable.
`boolean`	`isDeferrable()`	Runtime can decide to defer execution of deferrable mails.
`boolean`	`isUrgent()`	The urgent mail will be executed first compared to other mails.
`static MailboxExecutor.MailOptions`	`options()`
`static MailboxExecutor.MailOptions`	`urgent()`	Mark this mail as urgent.

- Method Detail
  - isDeferrable
```
boolean isDeferrable()
```
    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.
  - isUrgent
```
boolean isUrgent()
```
    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.
  - options
```
static MailboxExecutor.MailOptions options()
```
  - deferrable
```
static MailboxExecutor.MailOptions deferrable()
```
    Mark this mail as deferrable.
  - urgent
```
static MailboxExecutor.MailOptions urgent()
```
    Mark this mail as urgent.