When an operation fails, a failure method is called. This is `connectFailed()` for failures while building a connection to the server, and `callFailed()` when the HTTP call fails permanently. When a failure happens it is possible that a `start` event won’t have a corresponding `end` event.

![Events Diagram](../assets/images/******@****.***)

### Events with Retries and Follow-Ups

   * this address.
   *
   * If [planToReplace] is non-null, this will swap it for a pooled connection if that pooled
   * connection uses HTTP/2. That results in fewer sockets overall and thus fewer TCP slow starts.
   */
  internal fun planReusePooledConnection(
    planToReplace: ConnectPlan? = null,
    routes: List<Route>? = null,
  ): ReusePlan? {
    val result =
      connectionPool.callAcquirePooledConnection(

                } finally {
                    done.set(true);
                }
            }, Thread.currentThread().getName() + "-pdf");
            task.setDaemon(isDaemonThread);
            task.start();
            task.join(timeout);
            if (!done.get()) {
                for (int i = 0; i < 100 && !done.get(); i++) {
                    task.interrupt();
                    ThreadUtil.sleep(100L);

     * this operation is executing, not all of those new 1's may be set in the final state of this
     * LockFreeBitArray. The ONLY guarantee provided is that all the bits that were set in the other
     * LockFreeBitArray at the start of this method will be set in this LockFreeBitArray at the end
     * of this method.
     */
    void putAll(LockFreeBitArray other) {
      checkArgument(
          data.length() == other.data.length(),

"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->
<!-- START SNIPPET: core-extension -->
<extension>
  <exportedPackages>
    <!-- maven-* -->
    <exportedPackage>org.apache.maven.api</exportedPackage>

    <exportedPackage>org.apache.maven.*</exportedPackage>

    //                                                                           =========

    /**
     * Checks if login is required for the current request based on configuration
     * and user authentication status.
     *
     * @return true if login is required, false otherwise
     */
    protected boolean isLoginRequired() {
        if (fessConfig.isLoginRequired() && !fessLoginAssist.getSavedUserBean().isPresent()) {

            settingsBuilder.put("http.cors.enabled", true);
            settingsBuilder.put("discovery.type", "single-node");
        }).build(newConfigs().clusterName(clusterName).numOfNode(1));

        // wait for yellow status
        runner.ensureYellow();

        System.setProperty(FesenClient.HTTP_ADDRESS, "localhost:" + runner.node().settings().get("http.port", "9201"));

        super.setUp();
    }

    @Override

         */
        private static Pattern compilePattern(final String pattern) {
            final StringBuilder regex = new StringBuilder();
            regex.append("^"); // Match from the start

            for (int i = 0; i < pattern.length(); i++) {
                final char c = pattern.charAt(i);
                if (c == '*') {
                    // Wildcard: matches any sequence of characters

                            return;
                        }
                    }
                    results[index] = true; // Mark as successful
                });
                threads[i].start();
            }

            // Wait for all threads to complete
            for (Thread thread : threads) {
                thread.join();
            }
        }

        // Then

            final int index = i;
            threads[i] = new Thread(() -> {
                results[index] = transPeekNamedPipe.toString();
            });
            threads[i].start();
        }

        for (Thread thread : threads) {
            thread.join();
        }

        // Assert
        for (String result : results) {
            assertNotNull(result);