This is an automated email from the ASF dual-hosted git repository.

vgalaxies pushed a commit to branch intro-pd-service
in repository https://gitbox.apache.org/repos/asf/incubator-hugegraph.git

commit d2e46bc65f2179dcff4a00e667c8d9b82c116bf8
Author: VGalaxies <[email protected]>
AuthorDate: Sat Apr 20 16:00:57 2024 +0800

    format hg-pd-service
---
 hugegraph-pd/hg-pd-service/pom.xml                 |  4 +-
 .../org/apache/hugegraph/pd/boot/HugePDServer.java |  1 +
 .../apache/hugegraph/pd/metrics/MetricsConfig.java |  1 +
 .../org/apache/hugegraph/pd/metrics/PDMetrics.java |  1 +
 .../org/apache/hugegraph/pd/model/DemoModel.java   |  1 +
 .../hugegraph/pd/model/GraphRestRequest.java       |  1 +
 .../hugegraph/pd/model/GraphSpaceRestRequest.java  |  1 +
 .../apache/hugegraph/pd/model/PeerRestRequest.java |  1 +
 .../hugegraph/pd/model/PromTargetsModel.java       |  1 +
 .../apache/hugegraph/pd/model/RestApiResponse.java |  1 +
 .../hugegraph/pd/model/StoreRestRequest.java       |  1 +
 .../hugegraph/pd/model/TimeRangeRequest.java       |  1 +
 .../hugegraph/pd/notice/NoticeBroadcaster.java     |  1 +
 .../pd/pulse/AbstractObserverSubject.java          |  9 ++-
 .../apache/hugegraph/pd/pulse/PDPulseSubject.java  | 53 ++++++++---------
 .../apache/hugegraph/pd/pulse/PulseListener.java   |  1 +
 .../org/apache/hugegraph/pd/rest/GraphAPI.java     |  6 +-
 .../apache/hugegraph/pd/rest/GraphSpaceAPI.java    |  2 +-
 .../org/apache/hugegraph/pd/rest/IndexAPI.java     |  5 ++
 .../org/apache/hugegraph/pd/rest/MemberAPI.java    |  4 +-
 .../org/apache/hugegraph/pd/rest/PartitionAPI.java |  9 ++-
 .../org/apache/hugegraph/pd/rest/ShardAPI.java     |  3 +-
 .../org/apache/hugegraph/pd/rest/StoreAPI.java     |  3 +-
 .../java/org/apache/hugegraph/pd/rest/TaskAPI.java |  1 +
 .../java/org/apache/hugegraph/pd/rest/TestAPI.java |  2 -
 .../hugegraph/pd/service/KvServiceGrpcImpl.java    |  2 -
 .../hugegraph/pd/service/PDPulseService.java       |  5 +-
 .../apache/hugegraph/pd/service/PDRestService.java |  3 +-
 .../org/apache/hugegraph/pd/service/PDService.java |  2 -
 .../hugegraph/pd/service/PromTargetsService.java   |  1 -
 .../hugegraph/pd/upgrade/VersionScriptFactory.java |  1 +
 .../pd/upgrade/scripts/TaskCleanUpgrade.java       |  1 +
 .../org/apache/hugegraph/pd/util/DateUtil.java     |  1 +
 .../apache/hugegraph/pd/util/HgExecutorUtil.java   |  4 +-
 .../org/apache/hugegraph/pd/util/HgMapCache.java   |  3 +-
 .../java/org/apache/hugegraph/pd/util/IdUtil.java  |  1 +
 .../hugegraph/pd/util/grpc/GRpcServerConfig.java   |  1 +
 .../hugegraph/pd/watch/AbstractWatchSubject.java   |  9 ++-
 .../apache/hugegraph/pd/watch/KvWatchSubject.java  | 20 +++----
 .../hugegraph/pd/watch/NodeChangeSubject.java      | 10 ++--
 .../apache/hugegraph/pd/watch/PDWatchSubject.java  |  7 +--
 .../hugegraph/pd/watch/PartitionChangeSubject.java | 10 ++--
 .../hg-pd-service/src/main/resources/log4j2.xml    | 68 +++++++++++-----------
 .../hg-pd-service/src/test/resources/log4j2.xml    | 68 +++++++++++-----------
 44 files changed, 183 insertions(+), 148 deletions(-)

diff --git a/hugegraph-pd/hg-pd-service/pom.xml 
b/hugegraph-pd/hg-pd-service/pom.xml
index 6acab9d7c..682daba85 100644
--- a/hugegraph-pd/hg-pd-service/pom.xml
+++ b/hugegraph-pd/hg-pd-service/pom.xml
@@ -128,8 +128,8 @@
             <version>1.2.0</version>
             <exclusions>
                 <exclusion>
-                  <groupId>org.apache.logging.log4j</groupId>
-                  <artifactId>log4j-api</artifactId>
+                    <groupId>org.apache.logging.log4j</groupId>
+                    <artifactId>log4j-api</artifactId>
                 </exclusion>
             </exclusions>
         </dependency>
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/boot/HugePDServer.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/boot/HugePDServer.java
index 03032c505..e6fff5e1b 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/boot/HugePDServer.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/boot/HugePDServer.java
@@ -29,6 +29,7 @@ import com.alipay.remoting.util.StringUtils;
 @ComponentScan(basePackages = {"org.apache.hugegraph.pd"})
 @SpringBootApplication
 public class HugePDServer {
+
     public static void main(String[] args) {
         String logPath = System.getProperty("logging.path");
         if (StringUtils.isBlank(logPath)) {
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/metrics/MetricsConfig.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/metrics/MetricsConfig.java
index c444cbf1b..71aead610 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/metrics/MetricsConfig.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/metrics/MetricsConfig.java
@@ -26,6 +26,7 @@ import io.micrometer.core.instrument.MeterRegistry;
 
 @Configuration
 public class MetricsConfig {
+
     @Autowired
     private PDMetrics metrics;
 
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/metrics/PDMetrics.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/metrics/PDMetrics.java
index 3d6e74ac7..bbebfbe51 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/metrics/PDMetrics.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/metrics/PDMetrics.java
@@ -34,6 +34,7 @@ import lombok.extern.slf4j.Slf4j;
 @Component
 @Slf4j
 public final class PDMetrics {
+
     public static final String PREFIX = "hg";
     private static final AtomicLong GRAPHS = new AtomicLong(0);
     private MeterRegistry registry;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/DemoModel.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/DemoModel.java
index dfb749536..fab6d7027 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/DemoModel.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/DemoModel.java
@@ -20,6 +20,7 @@ package org.apache.hugegraph.pd.model;
 import java.util.Objects;
 
 public class DemoModel {
+
     private int status;
     private String text;
 
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/GraphRestRequest.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/GraphRestRequest.java
index 22b7aedad..809713a5b 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/GraphRestRequest.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/GraphRestRequest.java
@@ -21,6 +21,7 @@ import lombok.Data;
 
 @Data
 public class GraphRestRequest {
+
     private int partitionCount;
     private int shardCount;
 }
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/GraphSpaceRestRequest.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/GraphSpaceRestRequest.java
index 77af6f2ad..da641681a 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/GraphSpaceRestRequest.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/GraphSpaceRestRequest.java
@@ -21,5 +21,6 @@ import lombok.Data;
 
 @Data
 public class GraphSpaceRestRequest {
+
     private Long storageLimit;
 }
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/PeerRestRequest.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/PeerRestRequest.java
index 53ccc3c87..8509b8abf 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/PeerRestRequest.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/PeerRestRequest.java
@@ -21,5 +21,6 @@ import lombok.Data;
 
 @Data
 public class PeerRestRequest {
+
     private String peerList;
 }
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/PromTargetsModel.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/PromTargetsModel.java
index 7531f555b..9ed16f962 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/PromTargetsModel.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/PromTargetsModel.java
@@ -23,6 +23,7 @@ import java.util.Map;
 import java.util.Set;
 
 public class PromTargetsModel {
+
     private static final String LABEL_METRICS_PATH = "__metrics_path__";
     private static final String LABEL_SCHEME = "__scheme__";
     private static final String LABEL_JOB_NAME = "job";
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/RestApiResponse.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/RestApiResponse.java
index 613c87f46..8aef76bf2 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/RestApiResponse.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/RestApiResponse.java
@@ -25,6 +25,7 @@ import lombok.Data;
 
 @Data
 public class RestApiResponse {
+
     String message;
     Object data;
     int status;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/StoreRestRequest.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/StoreRestRequest.java
index 9283bb026..6fa8dd1f7 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/StoreRestRequest.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/StoreRestRequest.java
@@ -21,5 +21,6 @@ import lombok.Data;
 
 @Data
 public class StoreRestRequest {
+
     String storeState;
 }
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/TimeRangeRequest.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/TimeRangeRequest.java
index 5f26b80f8..617c70230 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/TimeRangeRequest.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/model/TimeRangeRequest.java
@@ -21,6 +21,7 @@ import lombok.Data;
 
 @Data
 public class TimeRangeRequest {
+
     String startTime;
     String endTime;
 }
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/notice/NoticeBroadcaster.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/notice/NoticeBroadcaster.java
index 385c9ae73..03ff2c11c 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/notice/NoticeBroadcaster.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/notice/NoticeBroadcaster.java
@@ -26,6 +26,7 @@ import lombok.extern.slf4j.Slf4j;
 
 @Slf4j
 public class NoticeBroadcaster {
+
     private final Supplier<Long> noticeSupplier;
     private long noticeId;
     private String durableId;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/AbstractObserverSubject.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/AbstractObserverSubject.java
index 029758420..431e479a5 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/AbstractObserverSubject.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/AbstractObserverSubject.java
@@ -37,6 +37,7 @@ import lombok.extern.slf4j.Slf4j;
 @ThreadSafe
 @Slf4j
 abstract class AbstractObserverSubject {
+
     /* send notice to client */
     private final Map<Long, StreamObserver<PulseResponse>> observerHolder = 
new HashMap<>(1024);
     /* notice from client */
@@ -149,7 +150,7 @@ abstract class AbstractObserverSubject {
 
     abstract long notifyClient(com.google.protobuf.GeneratedMessageV3 
response);
 
-    protected void notifyError(int code, String message){
+    protected void notifyError(int code, String message) {
         synchronized (lock) {
             Iterator<Map.Entry<Long, StreamObserver<PulseResponse>>> iter =
                     observerHolder.entrySet().iterator();
@@ -158,10 +159,12 @@ abstract class AbstractObserverSubject {
                 Long observerId = entry.getKey();
                 PulseResponse res = 
this.builder.setObserverId(observerId).build();
                 try {
-                    
entry.getValue().onError(Status.fromCodeValue(code).withDescription(message).asRuntimeException());
+                    
entry.getValue().onError(Status.fromCodeValue(code).withDescription(message)
+                                                   .asRuntimeException());
                 } catch (Throwable e) {
                     log.warn("Failed to send {} 's notice[{}] to observer[{}], 
error:{}",
-                            this.pulseType.name(),  toNoticeString(res), 
observerId, e.getMessage());
+                             this.pulseType.name(), toNoticeString(res), 
observerId,
+                             e.getMessage());
                 }
             }
         }
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/PDPulseSubject.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/PDPulseSubject.java
index 03e9fd4e9..48fe2d772 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/PDPulseSubject.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/PDPulseSubject.java
@@ -60,17 +60,18 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 @ThreadSafe
 public class PDPulseSubject {
+
     private final static long NOTICE_EXPIRATION_TIME = 30 * 60 * 1000;
     private final static int RETRYING_PERIOD_SECONDS = 60;
     private final static Map<String, AbstractObserverSubject> subjectHolder =
-        new ConcurrentHashMap<>();
+            new ConcurrentHashMap<>();
     private final static ConcurrentLinkedQueue<NoticeBroadcaster> 
broadcasterQueue =
-        new ConcurrentLinkedQueue<>();
+            new ConcurrentLinkedQueue<>();
     private final static ScheduledExecutorService scheduledExecutor =
-        Executors.newScheduledThreadPool(1);
+            Executors.newScheduledThreadPool(1);
 
     private static Supplier<List<Metapb.QueueItem>> queueRetrieveFunction =
-        () -> Collections.emptyList();
+            () -> Collections.emptyList();
     private static Function<Metapb.QueueItem, Boolean> queueDurableFunction = 
(e) -> true;
     private static Function<String, Boolean> queueRemoveFunction = (e) -> true;
 
@@ -100,15 +101,15 @@ public class PDPulseSubject {
 
     private static void appendQueue() {
         broadcasterQueue.addAll(
-            getQueueItems()
-                .parallelStream()
-                .filter(e -> !broadcasterQueue
-                    .stream()
-                    .anyMatch(b -> e.getItemId().equals(b.getDurableId()))
-                ).map(e -> createBroadcaster(e))
-                .peek(e -> log.info("Appending notice: {}", e))
-                .filter(e -> e != null)
-                .collect(Collectors.toList())
+                getQueueItems()
+                        .parallelStream()
+                        .filter(e -> !broadcasterQueue
+                                .stream()
+                                .anyMatch(b -> 
e.getItemId().equals(b.getDurableId()))
+                        ).map(e -> createBroadcaster(e))
+                        .peek(e -> log.info("Appending notice: {}", e))
+                        .filter(e -> e != null)
+                        .collect(Collectors.toList())
         );
     }
 
@@ -134,13 +135,13 @@ public class PDPulseSubject {
     }
 
     public static void setQueueRetrieveFunction(
-        Supplier<List<Metapb.QueueItem>> queueRetrieveFunction) {
+            Supplier<List<Metapb.QueueItem>> queueRetrieveFunction) {
         HgAssert.isArgumentNotNull(queueRetrieveFunction, 
"queueRetrieveFunction");
         PDPulseSubject.queueRetrieveFunction = queueRetrieveFunction;
     }
 
     public static void setQueueDurableFunction(
-        Function<Metapb.QueueItem, Boolean> queueDurableFunction) {
+            Function<Metapb.QueueItem, Boolean> queueDurableFunction) {
         HgAssert.isArgumentNotNull(queueDurableFunction, 
"queueDurableFunction");
         PDPulseSubject.queueDurableFunction = queueDurableFunction;
     }
@@ -157,7 +158,7 @@ public class PDPulseSubject {
      * @return
      */
     public static StreamObserver<PulseRequest> addObserver(
-        StreamObserver<PulseResponse> responseObserver) {
+            StreamObserver<PulseResponse> responseObserver) {
         isArgumentNotNull(responseObserver, "responseObserver");
         return new PDPulseStreamObserver(responseObserver);
     }
@@ -219,7 +220,7 @@ public class PDPulseSubject {
     // }
 
     public static <T extends com.google.protobuf.GeneratedMessageV3> 
Supplier<Long> getNoticeSupplier(
-        T notice) {
+            T notice) {
         PulseType type;
         if (notice instanceof PdInstructionResponse) {
             type = PulseType.PULSE_TYPE_PD_INSTRUCTION;
@@ -231,9 +232,8 @@ public class PDPulseSubject {
         return () -> getSubject(type).notifyClient(notice);
     }
 
-
     private static Supplier<String> getDurableSupplier(
-        com.google.protobuf.GeneratedMessageV3 notice) {
+            com.google.protobuf.GeneratedMessageV3 notice) {
         return () -> {
             Metapb.QueueItem queueItem = toQueueItem(notice);
             String res = null;
@@ -243,9 +243,9 @@ public class PDPulseSubject {
                     res = queueItem.getItemId();
                 } else {
                     log.error(
-                        "Failed to persist queue-item that contained " +
-                        "PartitionHeartbeatResponse: {}"
-                        , notice);
+                            "Failed to persist queue-item that contained " +
+                            "PartitionHeartbeatResponse: {}"
+                            , notice);
                 }
             } catch (Throwable t) {
                 log.error("Failed to invoke queueDurableFunction, cause by:", 
t);
@@ -317,6 +317,7 @@ public class PDPulseSubject {
     /* inner classes below */
 
     private static class PDPulseStreamObserver implements 
StreamObserver<PulseRequest> {
+
         private final StreamObserver<PulseResponse> responseObserver;
         private AbstractObserverSubject subject;
         private Long observerId;
@@ -329,7 +330,7 @@ public class PDPulseSubject {
 
             if (this.subject == null) {
                 this.responseObserver.onError(
-                    new Exception("Invoke cancel-observer before 
create-observer."));
+                        new Exception("Invoke cancel-observer before 
create-observer."));
                 return;
             }
 
@@ -374,7 +375,7 @@ public class PDPulseSubject {
 
             if (subject == null) {
                 responseObserver.onError(
-                    new Exception("Unsupported pulse-type: " + 
pulseType.name()));
+                        new Exception("Unsupported pulse-type: " + 
pulseType.name()));
                 return null;
             }
 
@@ -392,7 +393,7 @@ public class PDPulseSubject {
                             log.info("send change leader command to watch, due 
to ERROR-100", pde);
                             notifyClient(PdInstructionResponse.newBuilder()
                                                               
.setInstructionType(
-                                                                  
PdInstructionType.CHANGE_TO_FOLLOWER)
+                                                                      
PdInstructionType.CHANGE_TO_FOLLOWER)
                                                               
.setLeaderIp(RaftEngine.getInstance()
                                                                                
      .getLeaderGrpcAddress())
                                                               .build());
@@ -425,7 +426,7 @@ public class PDPulseSubject {
 
             if (pulseRequest.hasAckRequest()) {
                 this.ackNotice(pulseRequest.getAckRequest().getNoticeId()
-                    , pulseRequest.getAckRequest().getObserverId());
+                        , pulseRequest.getAckRequest().getObserverId());
             }
         }
 
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/PulseListener.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/PulseListener.java
index 09e0a7830..8a247257f 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/PulseListener.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/pulse/PulseListener.java
@@ -18,6 +18,7 @@
 package org.apache.hugegraph.pd.pulse;
 
 public interface PulseListener<T> {
+
     /**
      * Invoked on new notice.
      *
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/GraphAPI.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/GraphAPI.java
index 9b3eb7662..68d80beb4 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/GraphAPI.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/GraphAPI.java
@@ -50,6 +50,7 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 @RequestMapping("/v1")
 public class GraphAPI extends API {
+
     @Autowired
     PDRestService pdRestService;
     @Autowired
@@ -125,7 +126,6 @@ public class GraphAPI extends API {
         }
     }
 
-
     @GetMapping(value = "/graph/**", produces = 
MediaType.APPLICATION_JSON_VALUE)
     @ResponseBody
     public RestApiResponse getGraph(HttpServletRequest request) throws
@@ -158,6 +158,7 @@ public class GraphAPI extends API {
 
     @Data
     class Shard {
+
         long partitionId;
         long storeId;
         String state;
@@ -184,6 +185,7 @@ public class GraphAPI extends API {
 
     @Data
     class Partition {
+
         int partitionId;
         String graphName;
         String workState;
@@ -227,13 +229,13 @@ public class GraphAPI extends API {
                     this.shards = shardsList;
                 }
 
-
             }
         }
     }
 
     @Data
     class GraphStatistics {
+
         //图统计信息
         String graphName;
         long partitionCount;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/GraphSpaceAPI.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/GraphSpaceAPI.java
index c47e1869d..388f842e7 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/GraphSpaceAPI.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/GraphSpaceAPI.java
@@ -42,6 +42,7 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 @RequestMapping("/v1")
 public class GraphSpaceAPI extends API {
+
     @Autowired
     PDRestService pdRestService;
 
@@ -95,5 +96,4 @@ public class GraphSpaceAPI extends API {
         }
     }
 
-
 }
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/IndexAPI.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/IndexAPI.java
index 1ee2d3712..89f6e8624 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/IndexAPI.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/IndexAPI.java
@@ -44,6 +44,7 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 @RequestMapping("/")
 public class IndexAPI extends API {
+
     @Autowired
     PDService pdService;
     @Autowired
@@ -132,6 +133,7 @@ public class IndexAPI extends API {
 
     @Data
     class BriefStatistics {
+
         String state;
         String leader;
         int memberSize;
@@ -142,6 +144,7 @@ public class IndexAPI extends API {
 
     @Data
     class Store {
+
         long storeId;
         String address;
         String raftAddress;
@@ -164,6 +167,7 @@ public class IndexAPI extends API {
 
     @Data
     class Member {
+
         String raftUrl;
         String grpcUrl;
         String restUrl;
@@ -194,6 +198,7 @@ public class IndexAPI extends API {
 
     @Data
     class Statistics {
+
         /**
          * 集群状态
          */
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/MemberAPI.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/MemberAPI.java
index 28c9fdb98..b28b20a58 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/MemberAPI.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/MemberAPI.java
@@ -55,6 +55,7 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 @RequestMapping("/v1")
 public class MemberAPI extends API {
+
     //TODO
     @Autowired
     PDService pdService;
@@ -130,9 +131,9 @@ public class MemberAPI extends API {
         }
     }
 
-
     public static class CallStreamObserverWrap<V> extends 
CallStreamObserver<V> implements
                                                                                
 Future<List<V>> {
+
         CompletableFuture<List<V>> future = new CompletableFuture<>();
         List<V> values = new ArrayList<>();
 
@@ -206,6 +207,7 @@ public class MemberAPI extends API {
 
     @Data
     class Member {
+
         String raftUrl;
         String grpcUrl;
         String restUrl;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/PartitionAPI.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/PartitionAPI.java
index cdd3ac0ae..bdbdec39d 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/PartitionAPI.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/PartitionAPI.java
@@ -51,6 +51,7 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 @RequestMapping("/v1")
 public class PartitionAPI extends API {
+
     public static final String DEFAULT_DATETIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
     @Autowired
     PDRestService pdRestService;
@@ -240,7 +241,6 @@ public class PartitionAPI extends API {
                             role = 
finalShardStats.get(shard.getStoreId()).getRole();
                         }
 
-
                         HashMap<Integer, Metapb.RaftStats> storeRaftStats =
                                 raftMap.get(shard.getStoreId());
                         if (storeRaftStats != null) {
@@ -338,6 +338,7 @@ public class PartitionAPI extends API {
 
     @Data
     class Shard {
+
         String address;
         String storeId;
         Metapb.ShardRole role;
@@ -350,6 +351,7 @@ public class PartitionAPI extends API {
 
     @Data
     class Partition {
+
         int id;
         long version;
         String graphName;
@@ -360,7 +362,6 @@ public class PartitionAPI extends API {
         List<Shard> shards;
         String timestamp;
 
-
         Partition(Metapb.Partition pt) {
             id = pt.getId();
             version = pt.getVersion();
@@ -379,11 +380,11 @@ public class PartitionAPI extends API {
     @Data
     class Statistics {
 
-
     }
 
     @Data
     class HighLevelPartition {
+
         int partitionId;
         String state;
         String leaderAddress;
@@ -430,6 +431,7 @@ public class PartitionAPI extends API {
 
     @Data
     class GraphStats {
+
         String graphName;
         long keyCount;
         long startKey;
@@ -449,6 +451,7 @@ public class PartitionAPI extends API {
 
     @Data
     class ShardStats {
+
         long storeId;
         String role;
         String state;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/ShardAPI.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/ShardAPI.java
index 685d8fa3a..6cb5b09da 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/ShardAPI.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/ShardAPI.java
@@ -17,7 +17,6 @@
 
 package org.apache.hugegraph.pd.rest;
 
-
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -42,6 +41,7 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 @RequestMapping("/v1")
 public class ShardAPI extends API {
+
     @Autowired
     PDRestService pdRestService;
     @Autowired
@@ -109,6 +109,7 @@ public class ShardAPI extends API {
 
     @Data
     class Shard {
+
         long storeId;
         long partitionId;
         String role;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/StoreAPI.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/StoreAPI.java
index 258727774..030d5de46 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/StoreAPI.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/StoreAPI.java
@@ -181,7 +181,6 @@ public class StoreAPI extends API {
         }
     }
 
-
     @GetMapping(value = "store/{storeId}", produces = 
MediaType.APPLICATION_JSON_VALUE)
     @ResponseBody
     public RestApiResponse getStore(@PathVariable long storeId) {
@@ -238,6 +237,7 @@ public class StoreAPI extends API {
 
     @Data
     class Partition {
+
         //分区信息
         int partitionId;
         String graphName;
@@ -261,6 +261,7 @@ public class StoreAPI extends API {
 
     @Data
     class StoreStatistics {
+
         //store的统计信息
         long storeId;
         String address;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/TaskAPI.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/TaskAPI.java
index 06b8f0f8b..a1876141b 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/TaskAPI.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/TaskAPI.java
@@ -37,6 +37,7 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 @RequestMapping("/v1/task")
 public class TaskAPI extends API {
+
     @Autowired
     PDRestService pdRestService;
 
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/TestAPI.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/TestAPI.java
index f15be9b48..965cc83cd 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/TestAPI.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/rest/TestAPI.java
@@ -130,7 +130,6 @@ public class TestAPI {
                                                            
.setItemClass("item-class")
                                                            
.setItemContent(response.toByteString());
 
-
         QueueStore store = MetadataFactory.newQueueStore(pdConfig);
 
         try {
@@ -158,6 +157,5 @@ public class TestAPI {
             
PDPulseSubject.notifyClient(PartitionHeartbeatResponse.newBuilder(buf));
         });
 
-
     }
 }
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/KvServiceGrpcImpl.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/KvServiceGrpcImpl.java
index 99c58937b..ffa8cdaab 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/KvServiceGrpcImpl.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/KvServiceGrpcImpl.java
@@ -357,7 +357,6 @@ public class KvServiceGrpcImpl extends 
KvServiceGrpc.KvServiceImplBase implement
 
     }
 
-
     /**
      * 加锁
      *
@@ -484,7 +483,6 @@ public class KvServiceGrpcImpl extends 
KvServiceGrpc.KvServiceImplBase implement
         responseObserver.onCompleted();
     }
 
-
     /**
      * 锁续活
      *
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDPulseService.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDPulseService.java
index 83a1e1416..04db6ae35 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDPulseService.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDPulseService.java
@@ -42,8 +42,9 @@ import lombok.extern.slf4j.Slf4j;
 public class PDPulseService extends HgPdPulseGrpc.HgPdPulseImplBase {
 
     private static final Supplier<List<Metapb.QueueItem>> 
QUEUE_RETRIEVE_FUNCTION =
-        () -> Collections.emptyList();
-    private static final Function<Metapb.QueueItem, Boolean> 
QUEUE_ITEM_BOOLEAN_FUNCTION = (e) -> true;
+            () -> Collections.emptyList();
+    private static final Function<Metapb.QueueItem, Boolean> 
QUEUE_ITEM_BOOLEAN_FUNCTION =
+            (e) -> true;
     private static final Function<String, Boolean> QUEUE_REMOVE_FUNCTION = (e) 
-> true;
     @Autowired
     private PDConfig pdConfig;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDRestService.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDRestService.java
index 76ee4227b..ed902208c 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDRestService.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDRestService.java
@@ -50,6 +50,7 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 @Service
 public class PDRestService implements InitializingBean {
+
     private static final String EMPTY_STRING = "";
     @Autowired
     PDService pdService;
@@ -79,7 +80,6 @@ public class PDRestService implements InitializingBean {
         HgAssert.isNotNull(partitionService, "partitionService does not 
initialize");
     }
 
-
     public List<Metapb.Store> getStores(String graphName) throws PDException {
         return storeNodeService.getStores(graphName);
     }
@@ -253,7 +253,6 @@ public class PDRestService implements InitializingBean {
         return logService.getLog(LogService.NODE_CHANGE, start, end);
     }
 
-
     public List<Metapb.LogRecord> getPartitionLog(Long start, Long end) throws 
PDException {
         return logService.getLog(LogService.PARTITION_CHANGE, start, end);
     }
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDService.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDService.java
index 4ef740137..c9729bb52 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDService.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PDService.java
@@ -191,7 +191,6 @@ public class PDService extends PDGrpc.PDImplBase implements 
ServiceGrpc, RaftSta
             }
         });
 
-
         /**
          * 监听分区指令,并转发给 Store
          */
@@ -1760,7 +1759,6 @@ public class PDService extends PDGrpc.PDImplBase 
implements ServiceGrpc, RaftSta
         observer.onCompleted();
     }
 
-
     private List<KVPair<String, PeerId>> parseConfig(String conf) {
         List<KVPair<String, PeerId>> result = new LinkedList<>();
 
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PromTargetsService.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PromTargetsService.java
index 5f163e17d..a5e6dc863 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PromTargetsService.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/service/PromTargetsService.java
@@ -175,7 +175,6 @@ public class PromTargetsService {
                              }
                          });
 
-
                          return model;
                      })
                      .filter(e -> e != null)
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/upgrade/VersionScriptFactory.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/upgrade/VersionScriptFactory.java
index 5e01952e5..bfee49d4e 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/upgrade/VersionScriptFactory.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/upgrade/VersionScriptFactory.java
@@ -24,6 +24,7 @@ import 
org.apache.hugegraph.pd.upgrade.scripts.PartitionMetaUpgrade;
 import org.apache.hugegraph.pd.upgrade.scripts.TaskCleanUpgrade;
 
 public class VersionScriptFactory {
+
     private static final List<VersionUpgradeScript> SCRIPTS = new 
LinkedList<>();
     private static volatile VersionScriptFactory factory;
 
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/upgrade/scripts/TaskCleanUpgrade.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/upgrade/scripts/TaskCleanUpgrade.java
index bc302e31e..a876c0eb7 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/upgrade/scripts/TaskCleanUpgrade.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/upgrade/scripts/TaskCleanUpgrade.java
@@ -27,6 +27,7 @@ import lombok.extern.slf4j.Slf4j;
 
 @Slf4j
 public class TaskCleanUpgrade implements VersionUpgradeScript {
+
     @Override
     public String getHighVersion() {
         return UNLIMITED_VERSION;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/DateUtil.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/DateUtil.java
index 729e8c89f..94704dde8 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/DateUtil.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/DateUtil.java
@@ -25,6 +25,7 @@ import org.apache.hugegraph.pd.common.PDException;
 import org.apache.hugegraph.pd.grpc.Pdpb;
 
 public class DateUtil {
+
     private static final String DATE = "yyyy-MM-dd";
     private static final String DATETIME = "yyyy-MM-dd HH:mm:ss";
     private static final String DATETIME_MM = "yyyy-MM-dd HH:mm";
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/HgExecutorUtil.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/HgExecutorUtil.java
index 26e7d9742..caf7f48ab 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/HgExecutorUtil.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/HgExecutorUtil.java
@@ -32,9 +32,9 @@ import org.apache.hugegraph.pd.common.HgAssert;
 
 import lombok.extern.slf4j.Slf4j;
 
-
 @Slf4j
 public final class HgExecutorUtil {
+
     private static final Map<String, ThreadPoolExecutor> EXECUTOR_MAP = new 
ConcurrentHashMap<>();
     private static final Executor COMMON_EXECUTOR
             = new ThreadPoolExecutor(0, Integer.MAX_VALUE,
@@ -123,6 +123,7 @@ public final class HgExecutorUtil {
      * The default thread factory
      */
     static class HgThreadFactory implements ThreadFactory {
+
         private final AtomicInteger threadNumber = new AtomicInteger(1);
         private final String namePrefix;
         private final int priority;
@@ -152,6 +153,7 @@ public final class HgExecutorUtil {
      * The default thread factory, which added threadNamePrefix in 
construction method.
      */
     static class HgDefaultThreadFactory implements ThreadFactory {
+
         private static final AtomicInteger POOL_NUMBER = new AtomicInteger(1);
         private final AtomicInteger threadNumber = new AtomicInteger(1);
         private final String namePrefix;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/HgMapCache.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/HgMapCache.java
index fe84bb4b0..e3187912b 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/HgMapCache.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/HgMapCache.java
@@ -26,6 +26,7 @@ import java.util.function.Supplier;
  * @param <V>
  */
 public class HgMapCache<K, V> {
+
     private final Map<K, V> cache = new ConcurrentHashMap<K, V>();
     private final Supplier<Boolean> expiry;
 
@@ -52,7 +53,6 @@ public class HgMapCache<K, V> {
         this.cache.put(key, value);
     }
 
-
     public V get(K key) {
         if (isExpired()) {
             return null;
@@ -77,6 +77,7 @@ public class HgMapCache<K, V> {
     }
 
     private static class CycleIntervalPolicy implements Supplier<Boolean> {
+
         private long expireTime = 0;
         private long interval = 0;
 
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/IdUtil.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/IdUtil.java
index 6ecba60e1..ed05aceb0 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/IdUtil.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/IdUtil.java
@@ -21,6 +21,7 @@ import lombok.extern.slf4j.Slf4j;
 
 @Slf4j
 public final class IdUtil {
+
     private static final byte[] LOCK = new byte[0];
 
     public static String createMillisStr() {
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/grpc/GRpcServerConfig.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/grpc/GRpcServerConfig.java
index 83c198a80..be8f98e47 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/grpc/GRpcServerConfig.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/util/grpc/GRpcServerConfig.java
@@ -27,6 +27,7 @@ import io.grpc.ServerBuilder;
 
 @Component
 public class GRpcServerConfig extends GRpcServerBuilderConfigurer {
+
     public static final String EXECUTOR_NAME = "hg-grpc";
     @Autowired
     private PDConfig pdConfig;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/AbstractWatchSubject.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/AbstractWatchSubject.java
index bf25a578b..3e2f0b538 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/AbstractWatchSubject.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/AbstractWatchSubject.java
@@ -36,6 +36,7 @@ import lombok.extern.slf4j.Slf4j;
 @ThreadSafe
 @Slf4j
 abstract class AbstractWatchSubject {
+
     private final Map<Long, StreamObserver<WatchResponse>> watcherHolder = new 
HashMap<>(1024);
     private final byte[] lock = new byte[0];
     private final WatchResponse.Builder builder = WatchResponse.newBuilder();
@@ -74,7 +75,7 @@ abstract class AbstractWatchSubject {
 
     abstract String toNoticeString(WatchResponse res);
 
-    public void notifyError(int code, String message){
+    public void notifyError(int code, String message) {
         synchronized (lock) {
             Iterator<Map.Entry<Long, StreamObserver<WatchResponse>>> iter =
                     watcherHolder.entrySet().iterator();
@@ -83,9 +84,11 @@ abstract class AbstractWatchSubject {
                 Long watcherId = entry.getKey();
                 WatchResponse res = 
this.builder.setWatcherId(watcherId).build();
                 try {
-                    
entry.getValue().onError(Status.fromCodeValue(code).withDescription(message).asRuntimeException());
+                    
entry.getValue().onError(Status.fromCodeValue(code).withDescription(message)
+                                                   .asRuntimeException());
                 } catch (Throwable e) {
-                    // log.error("Failed to send " + this.watchType.name() + 
"'s error message [" + toNoticeString(res)
+                    // log.error("Failed to send " + this.watchType.name() + 
"'s error message ["
+                    // + toNoticeString(res)
                     //        + "] to watcher[" + watcherId + "].", e);
                 }
             }
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/KvWatchSubject.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/KvWatchSubject.java
index c70016a31..f0109a623 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/KvWatchSubject.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/KvWatchSubject.java
@@ -51,7 +51,7 @@ public class KvWatchSubject {
     public static final String ALL_PREFIX = "W";
     public static final long WATCH_TTL = 20000L;
     private static final ConcurrentMap<String, StreamObserver<WatchResponse>> 
clients =
-        new ConcurrentHashMap<>();
+            new ConcurrentHashMap<>();
     private final KvService kvService;
     BiPredicate<String, String> equal = String::equals;
     BiPredicate<String, String> startWith = String::startsWith;
@@ -74,7 +74,7 @@ public class KvWatchSubject {
         String watchKey = KvService.getKeyWithoutPrefix(ALL_PREFIX, delimiter, 
key, clientId);
         kvService.put(watchKey, "", WATCH_TTL);
         String clientFirstKey =
-            KvService.getKeyWithoutPrefix(ALL_PREFIX, clientId, delimiter, 
key, clientId);
+                KvService.getKeyWithoutPrefix(ALL_PREFIX, clientId, delimiter, 
key, clientId);
         kvService.put(clientFirstKey, "", WATCH_TTL);
     }
 
@@ -97,7 +97,7 @@ public class KvWatchSubject {
     public void addObserver(String key, long clientId, 
StreamObserver<WatchResponse> observer,
                             String delimiter) throws PDException {
         String keyWithoutPrefix =
-            KvService.getKeyWithoutPrefix(ALL_PREFIX, delimiter, key, 
clientId);
+                KvService.getKeyWithoutPrefix(ALL_PREFIX, delimiter, key, 
clientId);
         clients.putIfAbsent(keyWithoutPrefix, observer);
         addWatchKey(key, delimiter, clientId);
         log.info("client:{},start to watch key:{}", clientId, key);
@@ -106,7 +106,7 @@ public class KvWatchSubject {
     public void removeObserver(String key, long clientId, String delimiter) 
throws PDException {
         removeWatchKey(key, delimiter, clientId);
         String keyWithoutPrefix =
-            KvService.getKeyWithoutPrefix(ALL_PREFIX, delimiter, key, 
clientId);
+                KvService.getKeyWithoutPrefix(ALL_PREFIX, delimiter, key, 
clientId);
         clients.remove(keyWithoutPrefix);
     }
 
@@ -143,15 +143,15 @@ public class KvWatchSubject {
                     continue;
                 }
                 WatchKv watchKv =
-                    
WatchKv.newBuilder().setKey(kvKey).setValue(kv.getValue()).build();
+                        
WatchKv.newBuilder().setKey(kvKey).setValue(kv.getValue()).build();
                 WatchEvent event =
-                    
WatchEvent.newBuilder().setCurrent(watchKv).setType(watchType).build();
+                        
WatchEvent.newBuilder().setCurrent(watchKv).setType(watchType).build();
                 watchEvents.add(event);
             }
             StreamObserver<WatchResponse> observer = clients.get(keyAndClient);
             watchResponse =
-                
WatchResponse.newBuilder().setState(WatchState.Started).setClientId(clientId)
-                             .addAllEvents(watchEvents).build();
+                    
WatchResponse.newBuilder().setState(WatchState.Started).setClientId(clientId)
+                                 .addAllEvents(watchEvents).build();
 
             try {
                 if (observer != null) {
@@ -186,7 +186,7 @@ public class KvWatchSubject {
         WatchResponse testAlive = 
WatchResponse.newBuilder().setState(WatchState.Alive).build();
         Set<Map.Entry<String, StreamObserver<WatchResponse>>> entries = 
clients.entrySet();
         Map.Entry<String, StreamObserver<WatchResponse>>[] array =
-            entries.toArray(new Map.Entry[0]);
+                entries.toArray(new Map.Entry[0]);
         Arrays.stream(array).parallel().forEach(entry -> {
             StreamObserver<WatchResponse> value = entry.getValue();
             String key = entry.getKey();
@@ -260,7 +260,7 @@ public class KvWatchSubject {
      */
     public void notifyClientChangeLeader() {
         WatchResponse response =
-            
WatchResponse.newBuilder().setState(WatchState.Leader_Changed).build();
+                
WatchResponse.newBuilder().setState(WatchState.Leader_Changed).build();
         for (Map.Entry<String, StreamObserver<WatchResponse>> entry : 
clients.entrySet()) {
             StreamObserver<WatchResponse> value = entry.getValue();
             String key = entry.getKey();
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/NodeChangeSubject.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/NodeChangeSubject.java
index 3036c0023..5ef1deee6 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/NodeChangeSubject.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/NodeChangeSubject.java
@@ -48,11 +48,11 @@ final class NodeChangeSubject extends AbstractWatchSubject {
 
         super.notifyWatcher(builder -> {
             builder.setNodeResponse(
-                builder.getNodeResponseBuilder().clear()
-                       .setGraph(graph)
-                       .setNodeId(nodeId)
-                       .setNodeEventType(nodeEventType)
-                       .build()
+                    builder.getNodeResponseBuilder().clear()
+                           .setGraph(graph)
+                           .setNodeId(nodeId)
+                           .setNodeEventType(nodeEventType)
+                           .build()
             );
 
         });
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/PDWatchSubject.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/PDWatchSubject.java
index c1a429eb8..3b1437221 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/PDWatchSubject.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/PDWatchSubject.java
@@ -38,6 +38,7 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 @ThreadSafe
 public class PDWatchSubject implements StreamObserver<WatchRequest> {
+
     public final static Map<String, AbstractWatchSubject> subjectHolder = new 
ConcurrentHashMap<>();
     private final static byte[] lock = new byte[0];
 
@@ -101,8 +102,8 @@ public class PDWatchSubject implements 
StreamObserver<WatchRequest> {
         subjectHolder.get(type.name()).notifyWatcher(builder);
     }
 
-    public static void notifyError(int code, String message){
-        subjectHolder.forEach((k, v)->{
+    public static void notifyError(int code, String message) {
+        subjectHolder.forEach((k, v) -> {
             v.notifyError(code, message);
         });
     }
@@ -132,7 +133,6 @@ public class PDWatchSubject implements 
StreamObserver<WatchRequest> {
         this.subject.removeObserver(this.watcherId, this.responseObserver);
     }
 
-
     private WatchType getWatchType(WatchCreateRequest request) {
         WatchType watchType = request.getWatchType();
 
@@ -155,7 +155,6 @@ public class PDWatchSubject implements 
StreamObserver<WatchRequest> {
         return subject;
     }
 
-
     private void addWatcher(WatchCreateRequest request) {
         if (this.subject != null) {
             return;
diff --git 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/PartitionChangeSubject.java
 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/PartitionChangeSubject.java
index 43f5bc9b7..c7db46e8e 100644
--- 
a/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/PartitionChangeSubject.java
+++ 
b/hugegraph-pd/hg-pd-service/src/main/java/org/apache/hugegraph/pd/watch/PartitionChangeSubject.java
@@ -50,11 +50,11 @@ final class PartitionChangeSubject extends 
AbstractWatchSubject {
 
         super.notifyWatcher(builder -> {
             builder.setPartitionResponse(
-                builder.getPartitionResponseBuilder().clear()
-                       .setGraph(graph)
-                       .setPartitionId(partitionId)
-                       .setChangeType(changeType)
-                       .build()
+                    builder.getPartitionResponseBuilder().clear()
+                           .setGraph(graph)
+                           .setPartitionId(partitionId)
+                           .setChangeType(changeType)
+                           .build()
             );
 
         });
diff --git a/hugegraph-pd/hg-pd-service/src/main/resources/log4j2.xml 
b/hugegraph-pd/hg-pd-service/src/main/resources/log4j2.xml
index f3cd7c005..228f4d038 100644
--- a/hugegraph-pd/hg-pd-service/src/main/resources/log4j2.xml
+++ b/hugegraph-pd/hg-pd-service/src/main/resources/log4j2.xml
@@ -26,32 +26,32 @@
 
     <appenders>
         <Console name="console" target="SYSTEM_OUT">
-            <ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY"/>
-            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n"/>
+            <ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY" 
/>
+            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n" />
         </Console>
 
         <!-- Normal server log config -->
         <RollingRandomAccessFile name="file" 
fileName="${LOG_PATH}/${FILE_NAME}.log"
                                  
filePattern="${LOG_PATH}/$${date:yyyy-MM}/${FILE_NAME}-%d{yyyy-MM-dd}-%i.log"
                                  bufferedIO="true" bufferSize="524288" 
immediateFlush="false">
-            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY"/>
-            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n"/>
+            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY" 
/>
+            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n" />
             <!--JsonLayout compact="true" eventEol="true" complete="true" 
locationInfo="true">
                 <KeyValuePair key="timestamp" value="$${date:yyyy-MM-dd 
HH:mm:ss.SSS}"/>
             </JsonLayout-->
             <!-- Trigger after exceeding 1day or 50MB -->
             <Policies>
-                <SizeBasedTriggeringPolicy size="128MB"/>
-                <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
+                <SizeBasedTriggeringPolicy size="128MB" />
+                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
             </Policies>
             <!-- Keep 5 files per day & auto delete after over 2GB or 100 
files -->
             <DefaultRolloverStrategy max="16">
                 <Delete basePath="${LOG_PATH}" maxDepth="2">
-                    <IfFileName glob="*/*.log"/>
+                    <IfFileName glob="*/*.log" />
                     <!-- Limit log amount & size -->
                     <IfAny>
-                        <IfAccumulatedFileSize exceeds="2GB"/>
-                        <IfAccumulatedFileCount exceeds="100"/>
+                        <IfAccumulatedFileSize exceeds="2GB" />
+                        <IfAccumulatedFileCount exceeds="100" />
                     </IfAny>
                 </Delete>
             </DefaultRolloverStrategy>
@@ -61,24 +61,24 @@
         <RollingRandomAccessFile name="raft_file" 
fileName="${LOG_PATH}/${FILE_NAME}_raft.log"
                                  
filePattern="${LOG_PATH}/$${date:yyyy-MM}/${FILE_NAME}-%d{yyyy-MM-dd}-%i.log"
                                  bufferedIO="true" bufferSize="524288" 
immediateFlush="false">
-            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY"/>
-            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n"/>
+            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY" 
/>
+            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n" />
             <!--JsonLayout compact="true" eventEol="true" complete="true" 
locationInfo="true">
                 <KeyValuePair key="timestamp" value="$${date:yyyy-MM-dd 
HH:mm:ss.SSS}"/>
             </JsonLayout-->
             <!-- Trigger after exceeding 1day or 50MB -->
             <Policies>
-                <SizeBasedTriggeringPolicy size="128MB"/>
-                <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
+                <SizeBasedTriggeringPolicy size="128MB" />
+                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
             </Policies>
             <!-- Keep 5 files per day & auto Delete after over 2GB or 100 
files -->
             <DefaultRolloverStrategy max="16">
                 <Delete basePath="${LOG_PATH}" maxDepth="2">
-                    <IfFileName glob="*/*.log"/>
+                    <IfFileName glob="*/*.log" />
                     <!-- Limit log amount & size -->
                     <IfAny>
-                        <IfAccumulatedFileSize exceeds="2GB"/>
-                        <IfAccumulatedFileCount exceeds="100"/>
+                        <IfAccumulatedFileSize exceeds="2GB" />
+                        <IfAccumulatedFileCount exceeds="100" />
                     </IfAny>
                 </Delete>
             </DefaultRolloverStrategy>
@@ -88,25 +88,25 @@
         <RollingRandomAccessFile name="audit" 
fileName="${LOG_PATH}/audit-${FILE_NAME}.log"
                                  
filePattern="${LOG_PATH}/$${date:yyyy-MM}/audit-${FILE_NAME}-%d{yyyy-MM-dd-HH}-%i.gz"
                                  bufferedIO="true" bufferSize="524288" 
immediateFlush="false">
-            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY"/>
+            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY" 
/>
             <!-- Use simple format for audit log to speed up -->
             <!-- PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} - %m%n"/ -->
             <JsonLayout compact="true" eventEol="true" locationInfo="true">
-                <KeyValuePair key="timestamp" value="$${date:yyyy-MM-dd 
HH:mm:ss.SSS}"/>
+                <KeyValuePair key="timestamp" value="$${date:yyyy-MM-dd 
HH:mm:ss.SSS}" />
             </JsonLayout>
             <!-- Trigger after exceeding 1hour or 500MB -->
             <Policies>
-                <SizeBasedTriggeringPolicy size="512MB"/>
-                <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
+                <SizeBasedTriggeringPolicy size="512MB" />
+                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
             </Policies>
             <!-- Keep 2 files per hour & auto delete [after 60 days] or [over 
5GB or 500 files] -->
             <DefaultRolloverStrategy max="16">
                 <Delete basePath="${LOG_PATH}" maxDepth="2">
-                    <IfFileName glob="*/*.gz"/>
-                    <IfLastModified age="60d"/>
+                    <IfFileName glob="*/*.gz" />
+                    <IfLastModified age="60d" />
                     <IfAny>
-                        <IfAccumulatedFileSize exceeds="5GB"/>
-                        <IfAccumulatedFileCount exceeds="500"/>
+                        <IfAccumulatedFileSize exceeds="5GB" />
+                        <IfAccumulatedFileCount exceeds="500" />
                     </IfAny>
                 </Delete>
             </DefaultRolloverStrategy>
@@ -115,25 +115,25 @@
 
     <loggers>
         <root level="INFO">
-            <appender-ref ref="file"/>
-            <appender-ref ref="console"/>
+            <appender-ref ref="file" />
+            <appender-ref ref="console" />
         </root>
         <logger name="com.alipay.sofa" level="INFO" additivity="false">
-            <appender-ref ref="raft_file"/>
-            <appender-ref ref="console"/>
+            <appender-ref ref="raft_file" />
+            <appender-ref ref="console" />
         </logger>
         <logger name="io.netty" level="INFO" additivity="false">
-            <appender-ref ref="file"/>
-            <appender-ref ref="console"/>
+            <appender-ref ref="file" />
+            <appender-ref ref="console" />
         </logger>
         <logger name="org.apache.commons" level="INFO" additivity="false">
-            <appender-ref ref="file"/>
-            <appender-ref ref="console"/>
+            <appender-ref ref="file" />
+            <appender-ref ref="console" />
         </logger>
         <!-- Use mixed async way to output logs -->
         <AsyncLogger name="org.apache.hugegraph" level="INFO" 
additivity="false">
-            <appender-ref ref="file"/>
-            <appender-ref ref="console"/>
+            <appender-ref ref="file" />
+            <appender-ref ref="console" />
         </AsyncLogger>
     </loggers>
 </configuration>
diff --git a/hugegraph-pd/hg-pd-service/src/test/resources/log4j2.xml 
b/hugegraph-pd/hg-pd-service/src/test/resources/log4j2.xml
index e51bcb30a..ea7d9a076 100644
--- a/hugegraph-pd/hg-pd-service/src/test/resources/log4j2.xml
+++ b/hugegraph-pd/hg-pd-service/src/test/resources/log4j2.xml
@@ -26,32 +26,32 @@
 
     <appenders>
         <Console name="console" target="SYSTEM_OUT">
-            <ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY"/>
-            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n"/>
+            <ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY" 
/>
+            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n" />
         </Console>
 
         <!-- Normal server log config -->
         <RollingRandomAccessFile name="file" 
fileName="${LOG_PATH}/${FILE_NAME}.log"
                                  
filePattern="${LOG_PATH}/$${date:yyyy-MM}/${FILE_NAME}-%d{yyyy-MM-dd}-%i.log"
                                  bufferedIO="true" bufferSize="524288" 
immediateFlush="false">
-            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY"/>
-            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n"/>
+            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY" 
/>
+            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n" />
             <!--JsonLayout compact="true" eventEol="true" complete="true" 
locationInfo="true">
                 <KeyValuePair key="timestamp" value="$${date:yyyy-MM-dd 
HH:mm:ss.SSS}"/>
             </JsonLayout-->
             <!-- Trigger after exceeding 1day or 50MB -->
             <Policies>
-                <SizeBasedTriggeringPolicy size="128MB"/>
-                <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
+                <SizeBasedTriggeringPolicy size="128MB" />
+                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
             </Policies>
             <!-- Keep 5 files per day & auto delete after over 2GB or 100 
files -->
             <DefaultRolloverStrategy max="16">
                 <Delete basePath="${LOG_PATH}" maxDepth="2">
-                    <IfFileName glob="*/*.log"/>
+                    <IfFileName glob="*/*.log" />
                     <!-- Limit log amount & size -->
                     <IfAny>
-                        <IfAccumulatedFileSize exceeds="2GB"/>
-                        <IfAccumulatedFileCount exceeds="100"/>
+                        <IfAccumulatedFileSize exceeds="2GB" />
+                        <IfAccumulatedFileCount exceeds="100" />
                     </IfAny>
                 </Delete>
             </DefaultRolloverStrategy>
@@ -61,24 +61,24 @@
         <RollingRandomAccessFile name="raft_file" 
fileName="${LOG_PATH}/${FILE_NAME}_raft.log"
                                  
filePattern="${LOG_PATH}/$${date:yyyy-MM}/${FILE_NAME}-%d{yyyy-MM-dd}-%i.log"
                                  bufferedIO="true" bufferSize="524288" 
immediateFlush="false">
-            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY"/>
-            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n"/>
+            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY" 
/>
+            <PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} [%t] [%p] %c{1.} 
- %m%n" />
             <!--JsonLayout compact="true" eventEol="true" complete="true" 
locationInfo="true">
                 <KeyValuePair key="timestamp" value="$${date:yyyy-MM-dd 
HH:mm:ss.SSS}"/>
             </JsonLayout-->
             <!-- Trigger after exceeding 1day or 50MB -->
             <Policies>
-                <SizeBasedTriggeringPolicy size="128MB"/>
-                <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
+                <SizeBasedTriggeringPolicy size="128MB" />
+                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
             </Policies>
             <!-- Keep 5 files per day & auto Delete after over 2GB or 100 
files -->
             <DefaultRolloverStrategy max="16">
                 <Delete basePath="${LOG_PATH}" maxDepth="2">
-                    <IfFileName glob="*/*.log"/>
+                    <IfFileName glob="*/*.log" />
                     <!-- Limit log amount & size -->
                     <IfAny>
-                        <IfAccumulatedFileSize exceeds="2GB"/>
-                        <IfAccumulatedFileCount exceeds="100"/>
+                        <IfAccumulatedFileSize exceeds="2GB" />
+                        <IfAccumulatedFileCount exceeds="100" />
                     </IfAny>
                 </Delete>
             </DefaultRolloverStrategy>
@@ -88,25 +88,25 @@
         <RollingRandomAccessFile name="audit" 
fileName="${LOG_PATH}/audit-${FILE_NAME}.log"
                                  
filePattern="${LOG_PATH}/$${date:yyyy-MM}/audit-${FILE_NAME}-%d{yyyy-MM-dd-HH}-%i.gz"
                                  bufferedIO="true" bufferSize="524288" 
immediateFlush="false">
-            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY"/>
+            <ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY" 
/>
             <!-- Use simple format for audit log to speed up -->
             <!-- PatternLayout pattern="%-d{yyyy-MM-dd HH:mm:ss} - %m%n"/ -->
             <JsonLayout compact="true" eventEol="true" locationInfo="true">
-                <KeyValuePair key="timestamp" value="$${date:yyyy-MM-dd 
HH:mm:ss.SSS}"/>
+                <KeyValuePair key="timestamp" value="$${date:yyyy-MM-dd 
HH:mm:ss.SSS}" />
             </JsonLayout>
             <!-- Trigger after exceeding 1hour or 500MB -->
             <Policies>
-                <SizeBasedTriggeringPolicy size="512MB"/>
-                <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
+                <SizeBasedTriggeringPolicy size="512MB" />
+                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
             </Policies>
             <!-- Keep 2 files per hour & auto delete [after 60 days] or [over 
5GB or 500 files] -->
             <DefaultRolloverStrategy max="16">
                 <Delete basePath="${LOG_PATH}" maxDepth="2">
-                    <IfFileName glob="*/*.gz"/>
-                    <IfLastModified age="60d"/>
+                    <IfFileName glob="*/*.gz" />
+                    <IfLastModified age="60d" />
                     <IfAny>
-                        <IfAccumulatedFileSize exceeds="5GB"/>
-                        <IfAccumulatedFileCount exceeds="500"/>
+                        <IfAccumulatedFileSize exceeds="5GB" />
+                        <IfAccumulatedFileCount exceeds="500" />
                     </IfAny>
                 </Delete>
             </DefaultRolloverStrategy>
@@ -115,25 +115,25 @@
 
     <loggers>
         <root level="INFO">
-            <appender-ref ref="file"/>
-            <appender-ref ref="console"/>
+            <appender-ref ref="file" />
+            <appender-ref ref="console" />
         </root>
         <logger name="com.alipay.sofa" level="INFO" additivity="false">
-            <appender-ref ref="raft_file"/>
-            <appender-ref ref="console"/>
+            <appender-ref ref="raft_file" />
+            <appender-ref ref="console" />
         </logger>
         <logger name="io.netty" level="INFO" additivity="false">
-            <appender-ref ref="file"/>
-            <appender-ref ref="console"/>
+            <appender-ref ref="file" />
+            <appender-ref ref="console" />
         </logger>
         <logger name="org.apache.commons" level="INFO" additivity="false">
-            <appender-ref ref="file"/>
-            <appender-ref ref="console"/>
+            <appender-ref ref="file" />
+            <appender-ref ref="console" />
         </logger>
         <!-- Use mixed async way to output logs -->
         <AsyncLogger name="org.apache.hugegraph" level="INFO" 
additivity="false">
-            <appender-ref ref="file"/>
-            <appender-ref ref="console"/>
+            <appender-ref ref="file" />
+            <appender-ref ref="console" />
         </AsyncLogger>
     </loggers>
 </configuration>

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