Use deprecation logger holder in byte size value (#53928)

If a setting is touched during bootstrap before logging is configured,
and that setting uses a byte size value, the deprecation logger for
ByteSizeValue will be initialized. However, this means a logger will be
configured before log4j is initialized, which we reject at startup. This
commit puts this deprecation logger in a holder pattern so that it is
not initialized until first use, which will happen after logging is
configured.

server/src/main/java/org/elasticsearch/common/unit/ByteSizeValue.java

@@ -26,6 +26,8 @@ import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
 import org.elasticsearch.common.logging.DeprecationLogger;
+import org.elasticsearch.common.logging.LogConfigurator;
+import org.elasticsearch.common.settings.Setting;
 import org.elasticsearch.common.xcontent.ToXContentFragment;
 import org.elasticsearch.common.xcontent.XContentBuilder;
 
@@ -35,7 +37,14 @@ import java.util.Objects;
 
 public class ByteSizeValue implements Writeable, Comparable<ByteSizeValue>, ToXContentFragment {
 
-    private static final DeprecationLogger deprecationLogger = new DeprecationLogger(LogManager.getLogger(ByteSizeValue.class));
+    /**
+     * We have to lazy initialize the deprecation logger as otherwise a static logger here would be constructed before logging is configured
+     * leading to a runtime failure (see {@link LogConfigurator#checkErrorListener()} ). The premature construction would come from any
+     * {@link Setting} object constructed in, for example, settings in {@link org.elasticsearch.common.network.NetworkService}.
+     */
+    static class DeprecationLoggerHolder {
+        static DeprecationLogger deprecationLogger = new DeprecationLogger(LogManager.getLogger(ByteSizeValue.class));
+    }
 
     public static final ByteSizeValue ZERO = new ByteSizeValue(0, ByteSizeUnit.BYTES);
 
@@ -227,7 +236,7 @@ public class ByteSizeValue implements Writeable, Comparable<ByteSizeValue>, ToXC
             } catch (final NumberFormatException e) {
                 try {
                     final double doubleValue = Double.parseDouble(s);
-                    deprecationLogger.deprecated(
+                    DeprecationLoggerHolder.deprecationLogger.deprecated(
                             "Fractional bytes values are deprecated. Use non-fractional bytes values instead: [{}] found for setting [{}]",
                             initialInput, settingName);
                     return new ByteSizeValue((long) (doubleValue * unit.toBytes(1)));