- **Pilot** - Responsible for configuring the proxies at runtime.

    - **Citadel** - Responsible for certificate issuance and rotation.

    - **Galley** - Responsible for validating, ingesting, aggregating, transforming and distributing config within Istio.

- **Operator** - The component provides user friendly options to operate the Istio service mesh.

## Repositories

The Istio project is divided across a few GitHub repositories:

        ? new TransformingRandomAccessList<>(fromList, function)
        : new TransformingSequentialList<>(fromList, function);
  }

  /**
   * Implementation of a sequential transforming list.
   *
   * @see Lists#transform
   */
  private static class TransformingSequentialList<
          F extends @Nullable Object, T extends @Nullable Object>

 *
 * <h3>Derived steps</h3>
 *
 * A {@code ClosingFuture} step can be derived from one or more input {@code ClosingFuture} steps in
 * ways similar to {@link FluentFuture}s:
 *
 * <ul>
 *   <li>by transforming the value from a successful input step,
 *   <li>by catching the exception from a failed input step, or
 *   <li>by combining the results of several input steps.
 * </ul>
 *

   *     names in a loop until {@code mkdir()} returns {@code true}.) For JRE users, prefer {@link
   *     java.nio.file.Files#createTempDirectory}, transforming it to a {@link File} using {@link
   *     java.nio.file.Path#toFile() toFile()} if needed. To restrict permissions as this method
   *     does, pass {@code

   *     names in a loop until {@code mkdir()} returns {@code true}.) For JRE users, prefer {@link
   *     java.nio.file.Files#createTempDirectory}, transforming it to a {@link File} using {@link
   *     java.nio.file.Path#toFile() toFile()} if needed. To restrict permissions as this method
   *     does, pass {@code

            keys[i] = key;
            values[i] = value;
          }
        } else {
          // Need to sort and check for nulls and dupes.
          // Inline the Comparator implementation rather than transforming with a Function
          // to save code size.
          sort(
              entryArray,
              0,
              size,
              (e1, e2) -> {

            keys[i] = key;
            values[i] = value;
          }
        } else {
          // Need to sort and check for nulls and dupes.
          // Inline the Comparator implementation rather than transforming with a Function
          // to save code size.
          sort(
              entryArray,
              0,
              size,
              (e1, e2) -> {

- Fixed a race condition in kube-controller-manager and the scheduler, caused by
  a bug in the transforming informer during the Resync operation, 
  by making the transforming function idempotent. ([#124352](https://github.com/kubernetes/kubernetes/pull/124352), [@wojtek-t](https://github.com/wojtek-t)) [SIG API Machinery and Scheduling]