if (!closed.compareAndSet(false, true)) {
            return;
        }

        cleanupScheduler.shutdownNow();
        try {
            cleanupScheduler.awaitTermination(5, TimeUnit.SECONDS);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            log.warn("Interrupted while shutting down cleanup scheduler", e);
        }

public class RdmaErrorHandler {

    private static final Logger log = LoggerFactory.getLogger(RdmaErrorHandler.class);

    // Retry and timing constants (in ms)
    private static final long MAX_RETRY_DELAY = 10000; // 10 seconds maximum delay
    private static final int MAX_BACKOFF_SHIFT = 4; // Maximum 16x multiplier

    private final RdmaStatistics statistics;
    private final int maxRetries;
    private final long retryDelayMs;

    /**

    }

    /**
     * Calculate total throughput in MB/s based on total time
     *
     * @param totalTimeSeconds total elapsed time in seconds
     * @return throughput in MB/s
     */
    public double getThroughputMBps(double totalTimeSeconds) {
        if (totalTimeSeconds <= 0.0) {
            return 0.0;
        }

        }
    }

    /**
     * Shutdown the failover handler
     */
    public void shutdown() {
        executor.shutdown();
        try {
            if (!executor.awaitTermination(10, TimeUnit.SECONDS)) {
                executor.shutdownNow();
            }
        } catch (InterruptedException e) {
            executor.shutdownNow();
            Thread.currentThread().interrupt();
        }
    }

 */

package com.google.common.testing;

import static com.google.common.truth.Truth.assertThat;
import static java.nio.charset.StandardCharsets.UTF_8;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import com.google.common.base.CharMatcher;
import com.google.common.base.Equivalence;
import com.google.common.base.Joiner;
import com.google.common.base.Predicate;

        localhostIpv6,
      )

    client =
      clientTestRule
        .newClientBuilder()
        .eventListenerFactory(clientTestRule.wrap(listener))
        .connectTimeout(60, TimeUnit.SECONDS) // Deliberately exacerbate slow fallbacks.
        .dns { dnsResults }
        .fastFallback(true)
        .build()
    url =
      serverIpv4
        .url("/")
        .newBuilder()

        this.scope = scope;
        this.createTime = System.currentTimeMillis();
        this.lastUpdateTime = createTime;
        this.lastAccessTime = createTime;
        this.maxAge = 30000; // 30 seconds default

        this.children = new ConcurrentHashMap<>();
        this.lock = new ReentrantReadWriteLock();
        this.isComplete = false;
        this.hasChanges = false;
    }

    /**

    /**
     * Gets the registration flags.
     *
     * @return the registration flags
     */
    public int getFlags() {
        return flags;
    }

    /**
     * Sets the timeout value in seconds.
     *
     * @param timeout the timeout value
     */
    public void setTimeout(int timeout) {
        this.timeout = timeout;
    }

    /**
     * Gets the timeout value.
     *

    /** Cache for storing group information to reduce API calls. */
    protected Cache<String, Pair<String[], String[]>> groupCache;

    /** Group cache expiry time in seconds. */
    protected long groupCacheExpiry = 10 * 60L;

    /** Use V2 endpoint. */
    protected boolean useV2Endpoint = true;

    /**
     * Initializes the Azure AD authenticator.

        } catch (Exception e) {
            // Expected
        }
        long duration = System.currentTimeMillis() - startTime;

        // Test should complete in under 1 second (much less than the original 25+ seconds)
        assertTrue("Test should complete quickly (duration: " + duration + "ms)", duration < 1000);
    }

    // Fast mock implementations to minimize overhead