@J2ktIncompatible
  @GwtIncompatible // not used by GWT emulation
  @VisibleForTesting
  static final String SHARED_SECRETS_CLASSNAME = "sun.misc.SharedSecrets";

  /** Access to some fancy internal JVM internals. */
  @J2ktIncompatible @GwtIncompatible // java.lang.reflect
  private static final @Nullable Object jla = getJla();

  /**

**Performance Issues**
- Increase thread pool size in SuggesterBuilder
- Optimize batch sizes for indexing operations
- Review OpenSearch cluster performance

**Memory Usage**
- Configure appropriate JVM heap settings
- Monitor index sizes and optimize mappings
- Use streaming for large data imports

### Debug Logging

Enable debug logging for detailed troubleshooting:

```java

import org.lastaflute.di.core.external.GenericExternalContextComponentDefRegister;
import org.lastaflute.di.core.factory.SingletonLaContainerFactory;
import org.opensearch.monitor.jvm.JvmInfo;
import org.opensearch.monitor.os.OsProbe;
import org.opensearch.monitor.process.ProcessProbe;

import jakarta.annotation.Resource;

/**

app.encrypt.property.pattern=.*password|.*key|.*token|.*secret

# Extension names for application customization.
app.extension.names=

# Audit log format.
app.audit.log.format=

# JVM options for the crawler process.
jvm.crawler.options=\
-Djava.awt.headless=true\n\
-Dfile.encoding=UTF-8\n\
-Djna.nosys=true\n\
-Djdk.io.permissionsUseCanonicalPath=true\n\
-Dhttp.maxConnections=20\n\

export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
if [ "$MVNW_VERBOSE" = true ]; then
  echo $MAVEN_PROJECTBASEDIR
fi
MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"

# For Cygwin, switch paths to Windows format before running java
if $cygwin; then
  [ -n "$M2_HOME" ] &&
    M2_HOME=`cygpath --path --windows "$M2_HOME"`
  [ -n "$JAVA_HOME" ] &&

    echo "If you updated your Maven version, you need to update the specified wrapperSha256Sum property." >&2
    exit 1
  fi
fi

MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"

# For Cygwin, switch paths to Windows format before running java
if $cygwin; then
  [ -n "$JAVA_HOME" ] \
    && JAVA_HOME=$(cygpath --path --windows "$JAVA_HOME")
  [ -n "$CLASSPATH" ] \

        try {
            storage.destroy();
        } catch (DestroyFailedException e) {
            // This is acceptable - not all JVM implementations support destroying SecretKey
            // The important part is that the storage is marked as destroyed
        }

        assertTrue(storage.isDestroyed(), "Storage should be marked as destroyed");

## Version 3.14.9

_2020-05-17_

 *  Fix: Don't crash when running as a plugin in Android Studio Canary 4.1. To enable
    platform-specific TLS features OkHttp must detect whether it's running in a JVM or in Android.
    The upcoming Android Studio runs in a JVM but has classes from Android and that confused OkHttp!


## Version 3.14.8

_2020-04-28_

 *  Fix: Don't crash on Java 8u252 which introduces an API previously found only on Java 9 and

            }
        });
    }

    /**
     * Gets the system property option string for thumbnail path configuration.
     *
     * @return the property option string for JVM arguments
     */
    public String getThumbnailPathOption() {
        return "-D" + Constants.FESS_THUMBNAIL_PATH + "=" + baseDir.getAbsolutePath();
    }

    /**

 *   }
 * }
 * }
 *
 * <p>This class uses the ServiceManager's methods to start all of its services, to respond to
 * service failure and to ensure that when the JVM is shutting down all the services are stopped.
 *
 * @author Luke Sandberg
 * @since 14.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class ServiceManager implements ServiceManagerBridge {