org.apache.lucene.store

## Class RateLimiter.SimpleRateLimiter

- java.lang.Object
- - org.apache.lucene.store.RateLimiter
  - - org.apache.lucene.store.RateLimiter.SimpleRateLimiter

- Enclosing class:
    RateLimiter

      public static class RateLimiter.SimpleRateLimiter
      extends RateLimiter

  Simple class to rate limit IO.

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class org.apache.lucene.store.RateLimiter

      `RateLimiter.SimpleRateLimiter`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `SimpleRateLimiter(double mbPerSec)` mbPerSec is the MB/sec max IO rate

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `double` | `getMBPerSec()` The current mb per second rate limit.
    `long` | `getMinPauseCheckBytes()` How many bytes caller should add up itself before invoking `RateLimiter.pause(long)`.
    `long` | `pause(long bytes)` Pauses, if necessary, to keep the instantaneous IO rate at or below the target.
    `void` | `setMBPerSec(double mbPerSec)` Sets an updated mb per second rate limit.

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### SimpleRateLimiter

          public SimpleRateLimiter(double mbPerSec)

      mbPerSec is the MB/sec max IO rate

  - ### Method Detail

    - #### setMBPerSec

          public void setMBPerSec(double mbPerSec)

      Sets an updated mb per second rate limit.
      Specified by:
        `setMBPerSec` in class `RateLimiter`

    - #### getMinPauseCheckBytes

          public long getMinPauseCheckBytes()

      Description copied from class: `RateLimiter`
      How many bytes caller should add up itself before invoking `RateLimiter.pause(long)`. NOTE: The value returned by this method may change over time and is not guaranteed to be constant throughout the lifetime of the RateLimiter. Users are advised to refresh their local values with calls to this method to ensure consistency.
      Specified by:
        `getMinPauseCheckBytes` in class `RateLimiter`

    - #### getMBPerSec

          public double getMBPerSec()

      The current mb per second rate limit.
      Specified by:
        `getMBPerSec` in class `RateLimiter`

    - #### pause

          public long pause(long bytes)

      Pauses, if necessary, to keep the instantaneous IO rate at or below the target. Be sure to only call this method when bytes > `getMinPauseCheckBytes()`, otherwise it will pause way too long!
      Specified by:
        `pause` in class `RateLimiter`
      Returns:
        the pause time in nano seconds

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