From 67cb71e09e53ecaf83ac6bac7bd799e3b0bc7d93 Mon Sep 17 00:00:00 2001
From: pengys5 <8082209@qq.com>
Date: Tue, 25 Apr 2017 11:11:06 +0800
Subject: [PATCH] fixed pull request suggestion

---
 .../collector/worker/MergeAnalysisMember.java  |  2 +-
 .../worker/MergePersistenceMember.java         |  6 +++---
 .../collector/worker/MetricAnalysisMember.java |  2 +-
 .../worker/MetricPersistenceMember.java        |  6 +++---
 .../collector/worker/RecordAnalysisMember.java |  2 +-
 .../worker/RecordPersistenceMember.java        |  6 +++---
 .../segment/persistence/SegmentSave.java       |  6 +++---
 .../worker/storage/MergeAnalysisData.java      |  2 +-
 .../worker/storage/MergePersistenceData.java   |  6 +++---
 .../worker/storage/MetricAnalysisData.java     |  2 +-
 .../worker/storage/MetricPersistenceData.java  |  6 +++---
 .../worker/storage/PersistenceData.java        |  6 +++---
 .../worker/storage/PersistenceTimer.java       | 13 +++++++------
 .../storage/PersistenceWorkerListener.java     |  5 ++---
 .../worker/storage/RecordAnalysisData.java     |  2 +-
 .../worker/storage/RecordPersistenceData.java  |  6 +++---
 .../worker/storage/SegmentPersistenceData.java |  6 +++---
 .../collector/worker/storage/Window.java       | 18 +++++++-----------
 .../collector/worker/storage/WindowData.java   |  2 +-
 .../worker/MergePersistenceMemberTestCase.java |  2 +-
 .../MergePersistenceWindowDataTestCase.java    | 16 ++++++++--------
 .../MetricPersistenceWindowDataTestCase.java   | 12 ++++++------
 .../RecordPersistenceWindowDataTestCase.java   | 12 ++++++------
 23 files changed, 71 insertions(+), 75 deletions(-)

diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MergeAnalysisMember.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MergeAnalysisMember.java
index ca4e97a05..395759e87 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MergeAnalysisMember.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MergeAnalysisMember.java
@@ -22,7 +22,7 @@ public abstract class MergeAnalysisMember extends AnalysisMember {
     }
 
     final protected void setMergeData(String id, String column, String value) throws Exception {
-        getMergeAnalysisData().getElseCreate(id).setMergeData(column, value);
+        getMergeAnalysisData().getOrCreate(id).setMergeData(column, value);
     }
 
     @Override
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MergePersistenceMember.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MergePersistenceMember.java
index 56e0268bf..2e26fb325 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MergePersistenceMember.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MergePersistenceMember.java
@@ -35,9 +35,9 @@ public abstract class MergePersistenceMember extends PersistenceMember<MergePers
         if (message instanceof MergeData) {
             MergeData mergeData = (MergeData) message;
             MergePersistenceData data = getPersistenceData();
-            data.holdData();
-            data.getElseCreate(mergeData.getId()).merge(mergeData);
-            data.releaseData();
+            data.hold();
+            data.getOrCreate(mergeData.getId()).merge(mergeData);
+            data.release();
         } else {
             logger.error("unhandled message, message instance must MergeData, but is %s", message.getClass().toString());
         }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MetricAnalysisMember.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MetricAnalysisMember.java
index 9346f6a8d..c01c0af1d 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MetricAnalysisMember.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MetricAnalysisMember.java
@@ -17,7 +17,7 @@ public abstract class MetricAnalysisMember extends AnalysisMember {
     }
 
     final protected void setMetric(String id, String column, Long value) throws Exception {
-        getMetricAnalysisData().getElseCreate(id).setMetric(column, value);
+        getMetricAnalysisData().getOrCreate(id).setMetric(column, value);
     }
 
     private MetricAnalysisData getMetricAnalysisData() {
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MetricPersistenceMember.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MetricPersistenceMember.java
index 6473460fe..520b100ef 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MetricPersistenceMember.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/MetricPersistenceMember.java
@@ -34,9 +34,9 @@ public abstract class MetricPersistenceMember extends PersistenceMember<MetricPe
         if (message instanceof MetricData) {
             MetricData metricData = (MetricData) message;
             MetricPersistenceData data = getPersistenceData();
-            data.holdData();
-            data.getElseCreate(metricData.getId()).merge(metricData);
-            data.releaseData();
+            data.hold();
+            data.getOrCreate(metricData.getId()).merge(metricData);
+            data.release();
         } else {
             logger.error("unhandled message, message instance must MetricData, but is %s", message.getClass().toString());
         }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/RecordAnalysisMember.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/RecordAnalysisMember.java
index 8e9045e43..c4c912c8e 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/RecordAnalysisMember.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/RecordAnalysisMember.java
@@ -19,7 +19,7 @@ public abstract class RecordAnalysisMember extends AnalysisMember {
     }
 
     final public void setRecord(String id, JsonObject record) throws Exception {
-        getRecordAnalysisData().getElseCreate(id).setRecord(record);
+        getRecordAnalysisData().getOrCreate(id).setRecord(record);
     }
 
     private RecordAnalysisData getRecordAnalysisData() {
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/RecordPersistenceMember.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/RecordPersistenceMember.java
index 756ca841b..84cf9ade2 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/RecordPersistenceMember.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/RecordPersistenceMember.java
@@ -35,9 +35,9 @@ public abstract class RecordPersistenceMember extends PersistenceMember<RecordPe
             RecordData recordData = (RecordData) message;
             logger.debug("setRecord: id: %s, data: %s", recordData.getId(), recordData.getRecord());
             RecordPersistenceData data = getPersistenceData();
-            data.holdData();
-            data.getElseCreate(recordData.getId()).setRecord(recordData.getRecord());
-            data.releaseData();
+            data.hold();
+            data.getOrCreate(recordData.getId()).setRecord(recordData.getRecord());
+            data.release();
         } else {
             logger.error("message unhandled");
         }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/persistence/SegmentSave.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/persistence/SegmentSave.java
index ea55ce124..1e32ded46 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/persistence/SegmentSave.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/persistence/SegmentSave.java
@@ -53,12 +53,12 @@ public class SegmentSave extends PersistenceMember<SegmentPersistenceData, Segme
         if (message instanceof Segment) {
             Segment segment = (Segment) message;
             SegmentPersistenceData data = getPersistenceData();
-            data.holdData();
-            data.getElseCreate(segment.getTraceSegmentId() + i).setSegmentStr(segment.getJsonStr());
+            data.hold();
+            data.getOrCreate(segment.getTraceSegmentId() + i).setSegmentStr(segment.getJsonStr());
             if (data.size() >= CacheSizeConfig.Cache.Persistence.SIZE) {
                 persistence(data.asMap());
             }
-            data.releaseData();
+            data.release();
             i++;
         } else {
             logger.error("unhandled message, message instance must Segment, but is %s", message.getClass().toString());
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MergeAnalysisData.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MergeAnalysisData.java
index 920b567e0..61d70221b 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MergeAnalysisData.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MergeAnalysisData.java
@@ -10,7 +10,7 @@ public class MergeAnalysisData {
 
     private WindowData<MergeData> windowData = new WindowData(new LinkedHashMap<String, MergeData>());
 
-    public MergeData getElseCreate(String id) {
+    public MergeData getOrCreate(String id) {
         if (!windowData.containsKey(id)) {
             windowData.put(id, new MergeData(id));
         }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MergePersistenceData.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MergePersistenceData.java
index 437ab1f37..bf708ae6d 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MergePersistenceData.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MergePersistenceData.java
@@ -7,18 +7,18 @@ public class MergePersistenceData extends Window<MergeData> implements Persisten
 
     private WindowData<MergeData> lockedWindowData;
 
-    public MergeData getElseCreate(String id) {
+    public MergeData getOrCreate(String id) {
         if (!lockedWindowData.containsKey(id)) {
             lockedWindowData.put(id, new MergeData(id));
         }
         return lockedWindowData.get(id);
     }
 
-    public void holdData() {
+    public void hold() {
         lockedWindowData = getCurrentAndHold();
     }
 
-    public void releaseData() {
+    public void release() {
         lockedWindowData.release();
         lockedWindowData = null;
     }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MetricAnalysisData.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MetricAnalysisData.java
index 5fb110ebf..394302f75 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MetricAnalysisData.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MetricAnalysisData.java
@@ -10,7 +10,7 @@ public class MetricAnalysisData {
 
     private WindowData<MetricData> windowData = new WindowData(new LinkedHashMap<String, MetricData>());
 
-    public MetricData getElseCreate(String id) {
+    public MetricData getOrCreate(String id) {
         if (!windowData.containsKey(id)) {
             windowData.put(id, new MetricData(id));
         }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MetricPersistenceData.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MetricPersistenceData.java
index a18d3f51a..e8ed10b86 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MetricPersistenceData.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/MetricPersistenceData.java
@@ -7,18 +7,18 @@ public class MetricPersistenceData extends Window<MetricData> implements Persist
 
     private WindowData<MetricData> lockedWindowData;
 
-    public MetricData getElseCreate(String id) {
+    public MetricData getOrCreate(String id) {
         if (!lockedWindowData.containsKey(id)) {
             lockedWindowData.put(id, new MetricData(id));
         }
         return lockedWindowData.get(id);
     }
 
-    public void holdData() {
+    public void hold() {
         lockedWindowData = getCurrentAndHold();
     }
 
-    public void releaseData() {
+    public void release() {
         lockedWindowData.release();
         lockedWindowData = null;
     }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceData.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceData.java
index 6bbc6b451..f73f83659 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceData.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceData.java
@@ -5,9 +5,9 @@ package com.a.eye.skywalking.collector.worker.storage;
  */
 public interface PersistenceData<T extends Data> {
 
-    T getElseCreate(String id);
+    T getOrCreate(String id);
 
-    void releaseData();
+    void release();
 
-    void holdData();
+    void hold();
 }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceTimer.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceTimer.java
index 4b315ef3c..a3c007211 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceTimer.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceTimer.java
@@ -4,6 +4,7 @@ import com.a.eye.skywalking.collector.actor.AbstractLocalSyncWorker;
 import com.a.eye.skywalking.collector.worker.config.EsConfig;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.message.StringFormattedMessage;
 import org.elasticsearch.action.index.IndexRequestBuilder;
 
 import java.util.LinkedList;
@@ -26,13 +27,14 @@ public enum PersistenceTimer {
                 try {
                     extractDataAndSave();
                     Thread.sleep(timeInterval);
-                } catch (Exception e) {
-                    e.printStackTrace();
+                } catch (Throwable e) {
+                    logger.error(e);
                 }
             }
         };
-        Thread thread = new Thread(runnable);
-        thread.start();
+        Thread persistenceThread = new Thread(runnable);
+        persistenceThread.setName("timerPersistence");
+        persistenceThread.start();
     }
 
     private void extractDataAndSave() {
@@ -44,8 +46,7 @@ public enum PersistenceTimer {
             try {
                 worker.allocateJob(new FlushAndSwitch(), dataList);
             } catch (Exception e) {
-                logger.error("flush persistence worker data error, worker role name: %s", worker.getRole().roleName());
-                e.printStackTrace();
+                logger.error(new StringFormattedMessage("flush persistence worker data error, worker role name: %s", worker.getRole().roleName()), e);
             }
         }
         EsClient.INSTANCE.bulk(dataList);
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceWorkerListener.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceWorkerListener.java
index 2e1d289ba..0c810b9af 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceWorkerListener.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/PersistenceWorkerListener.java
@@ -1,8 +1,7 @@
 package com.a.eye.skywalking.collector.worker.storage;
 
 import com.a.eye.skywalking.collector.actor.AbstractLocalSyncWorker;
-
-import java.util.ArrayList;
+import java.util.LinkedList;
 import java.util.List;
 
 /**
@@ -11,7 +10,7 @@ import java.util.List;
 public enum PersistenceWorkerListener {
     INSTANCE;
 
-    private List<AbstractLocalSyncWorker> workers = new ArrayList<>();
+    private List<AbstractLocalSyncWorker> workers = new LinkedList<>();
 
     public void register(AbstractLocalSyncWorker worker) {
         workers.add(worker);
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/RecordAnalysisData.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/RecordAnalysisData.java
index a2ec96043..aa96482c7 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/RecordAnalysisData.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/RecordAnalysisData.java
@@ -10,7 +10,7 @@ public class RecordAnalysisData {
 
     private WindowData<RecordData> windowData = new WindowData(new LinkedHashMap<String, RecordData>());
 
-    public RecordData getElseCreate(String id) {
+    public RecordData getOrCreate(String id) {
         if (!windowData.containsKey(id)) {
             windowData.put(id, new RecordData(id));
         }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/RecordPersistenceData.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/RecordPersistenceData.java
index 77a498f6b..9d4890806 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/RecordPersistenceData.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/RecordPersistenceData.java
@@ -7,18 +7,18 @@ public class RecordPersistenceData extends Window<RecordData> implements Persist
 
     private WindowData<RecordData> lockedWindowData;
 
-    public RecordData getElseCreate(String id) {
+    public RecordData getOrCreate(String id) {
         if (!lockedWindowData.containsKey(id)) {
             lockedWindowData.put(id, new RecordData(id));
         }
         return lockedWindowData.get(id);
     }
 
-    public void holdData() {
+    public void hold() {
         lockedWindowData = getCurrentAndHold();
     }
 
-    public void releaseData() {
+    public void release() {
         lockedWindowData.release();
         lockedWindowData = null;
     }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/SegmentPersistenceData.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/SegmentPersistenceData.java
index eff19be7b..2934a48e5 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/SegmentPersistenceData.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/SegmentPersistenceData.java
@@ -9,18 +9,18 @@ public class SegmentPersistenceData extends Window<SegmentData> implements Persi
 
     private WindowData<SegmentData> lockedWindowData;
 
-    public SegmentData getElseCreate(String id) {
+    public SegmentData getOrCreate(String id) {
         if (!lockedWindowData.containsKey(id)) {
             lockedWindowData.put(id, new SegmentData(id));
         }
         return lockedWindowData.get(id);
     }
 
-    public void holdData() {
+    public void hold() {
         lockedWindowData = getCurrentAndHold();
     }
 
-    public void releaseData() {
+    public void release() {
         lockedWindowData.release();
         lockedWindowData = null;
     }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/Window.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/Window.java
index 9c36d7674..615dbc138 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/Window.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/Window.java
@@ -7,7 +7,7 @@ import java.util.HashMap;
  */
 public abstract class Window<T extends Data> {
 
-    private Pointer current;
+    private WindowData<T> pointer;
 
     private WindowData<T> windowDataA;
     private WindowData<T> windowDataB;
@@ -15,19 +15,19 @@ public abstract class Window<T extends Data> {
     public Window() {
         windowDataA = new WindowData(new HashMap<>());
         windowDataB = new WindowData(new HashMap<>());
-        current = Pointer.A;
+        pointer = windowDataA;
     }
 
     public void switchPointer() {
-        if (current.equals(Pointer.A)) {
-            current = Pointer.B;
+        if (pointer == windowDataA) {
+            pointer = windowDataB;
         } else {
-            current = Pointer.A;
+            pointer = windowDataA;
         }
     }
 
     protected WindowData<T> getCurrentAndHold() {
-        if (Pointer.A.equals(current)) {
+        if (pointer == windowDataA) {
             windowDataA.hold();
             return windowDataA;
         } else {
@@ -37,14 +37,10 @@ public abstract class Window<T extends Data> {
     }
 
     public WindowData<T> getLast() {
-        if (Pointer.A.equals(current)) {
+        if (pointer == windowDataA) {
             return windowDataB;
         } else {
             return windowDataA;
         }
     }
-
-    enum Pointer {
-        A, B
-    }
 }
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/WindowData.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/WindowData.java
index de299b31a..f630654be 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/WindowData.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/storage/WindowData.java
@@ -7,7 +7,7 @@ import java.util.Map;
  */
 public class WindowData<T extends Data> {
     private Map<String, T> data;
-    private boolean isHold;
+    private volatile boolean isHold;
 
     WindowData(Map<String, T> data) {
         this.data = data;
diff --git a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/MergePersistenceMemberTestCase.java b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/MergePersistenceMemberTestCase.java
index f370eed67..ecf119012 100644
--- a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/MergePersistenceMemberTestCase.java
+++ b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/MergePersistenceMemberTestCase.java
@@ -41,7 +41,7 @@ public class MergePersistenceMemberTestCase {
         MergeData mergeData = mock(MergeData.class);
 
         when(mergePersistenceMember, "getPersistenceData").thenReturn(persistenceData);
-        when(persistenceData.getElseCreate(Mockito.anyString())).thenReturn(mergeData);
+        when(persistenceData.getOrCreate(Mockito.anyString())).thenReturn(mergeData);
 
         doCallRealMethod().when(mergePersistenceMember).analyse(Mockito.any(MergeData.class));
     }
diff --git a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/MergePersistenceWindowDataTestCase.java b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/MergePersistenceWindowDataTestCase.java
index c403d5ac5..b7c84ece2 100644
--- a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/MergePersistenceWindowDataTestCase.java
+++ b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/MergePersistenceWindowDataTestCase.java
@@ -11,28 +11,28 @@ public class MergePersistenceWindowDataTestCase {
     @Test
     public void testGetElseCreate() {
         MergePersistenceData persistenceData = new MergePersistenceData();
-        persistenceData.holdData();
-        MergeData mergeData = persistenceData.getElseCreate("test");
+        persistenceData.hold();
+        MergeData mergeData = persistenceData.getOrCreate("test");
         Assert.assertEquals("test", mergeData.getId());
     }
 
     @Test
     public void testSize() {
         MergePersistenceData persistenceData = new MergePersistenceData();
-        persistenceData.holdData();
-        persistenceData.getElseCreate("test_1");
+        persistenceData.hold();
+        persistenceData.getOrCreate("test_1");
         Assert.assertEquals(1, persistenceData.getCurrentAndHold().size());
-        persistenceData.getElseCreate("test_1");
+        persistenceData.getOrCreate("test_1");
         Assert.assertEquals(1, persistenceData.getCurrentAndHold().size());
-        persistenceData.getElseCreate("test_2");
+        persistenceData.getOrCreate("test_2");
         Assert.assertEquals(2, persistenceData.getCurrentAndHold().size());
     }
 
     @Test
     public void testClear() {
         MergePersistenceData persistenceData = new MergePersistenceData();
-        persistenceData.holdData();
-        persistenceData.getElseCreate("test_1");
+        persistenceData.hold();
+        persistenceData.getOrCreate("test_1");
         Assert.assertEquals(1, persistenceData.getCurrentAndHold().size());
         persistenceData.getCurrentAndHold().clear();
         Assert.assertEquals(0, persistenceData.getCurrentAndHold().size());
diff --git a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/MetricPersistenceWindowDataTestCase.java b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/MetricPersistenceWindowDataTestCase.java
index 064361972..57d2d532c 100644
--- a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/MetricPersistenceWindowDataTestCase.java
+++ b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/MetricPersistenceWindowDataTestCase.java
@@ -14,12 +14,12 @@ public class MetricPersistenceWindowDataTestCase {
         String id = "2016" + Const.ID_SPLIT + "A" + Const.ID_SPLIT + "B";
 
         MetricPersistenceData metricPersistenceData = new MetricPersistenceData();
-        metricPersistenceData.holdData();
-        MetricData metricData = metricPersistenceData.getElseCreate(id);
+        metricPersistenceData.hold();
+        MetricData metricData = metricPersistenceData.getOrCreate(id);
         metricData.setMetric("Column_1", 10L);
         Assert.assertEquals(id, metricData.getId());
 
-        MetricData metricData1 = metricPersistenceData.getElseCreate(id);
+        MetricData metricData1 = metricPersistenceData.getOrCreate(id);
         Assert.assertEquals(10L, metricData1.asMap().get("Column_1"));
     }
 
@@ -28,12 +28,12 @@ public class MetricPersistenceWindowDataTestCase {
         String id = "2016" + Const.ID_SPLIT + "A" + Const.ID_SPLIT + "B";
 
         MetricPersistenceData metricPersistenceData = new MetricPersistenceData();
-        metricPersistenceData.holdData();
-        metricPersistenceData.getElseCreate(id);
+        metricPersistenceData.hold();
+        metricPersistenceData.getOrCreate(id);
 
         Assert.assertEquals(1, metricPersistenceData.getCurrentAndHold().size());
         String id_1 = "2016" + Const.ID_SPLIT + "B" + Const.ID_SPLIT + "C";
-        metricPersistenceData.getElseCreate(id_1);
+        metricPersistenceData.getOrCreate(id_1);
         Assert.assertEquals(2, metricPersistenceData.getCurrentAndHold().size());
 
         metricPersistenceData.getCurrentAndHold().clear();
diff --git a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/RecordPersistenceWindowDataTestCase.java b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/RecordPersistenceWindowDataTestCase.java
index 7098b5271..766a0eff1 100644
--- a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/RecordPersistenceWindowDataTestCase.java
+++ b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/storage/RecordPersistenceWindowDataTestCase.java
@@ -17,14 +17,14 @@ public class RecordPersistenceWindowDataTestCase {
         JsonObject record = new JsonObject();
         record.addProperty("Column_1", "Value_1");
         RecordPersistenceData recordPersistenceData = new RecordPersistenceData();
-        recordPersistenceData.holdData();
+        recordPersistenceData.hold();
 
-        RecordData recordData = recordPersistenceData.getElseCreate(id);
+        RecordData recordData = recordPersistenceData.getOrCreate(id);
         recordData.setRecord(record);
 
         Assert.assertEquals(id, recordData.getId());
 
-        RecordData recordData1 = recordPersistenceData.getElseCreate(id);
+        RecordData recordData1 = recordPersistenceData.getOrCreate(id);
         Assert.assertEquals("Value_1", recordData1.getRecord().get("Column_1").getAsString());
     }
 
@@ -33,11 +33,11 @@ public class RecordPersistenceWindowDataTestCase {
         String id_1 = "2016" + Const.ID_SPLIT + "A" + Const.ID_SPLIT + "B";
         String id_2 = "2016" + Const.ID_SPLIT + "B" + Const.ID_SPLIT + "C";
         RecordPersistenceData recordPersistenceData = new RecordPersistenceData();
-        recordPersistenceData.holdData();
+        recordPersistenceData.hold();
 
-        recordPersistenceData.getElseCreate(id_1);
+        recordPersistenceData.getOrCreate(id_1);
         Assert.assertEquals(1, recordPersistenceData.getCurrentAndHold().size());
-        recordPersistenceData.getElseCreate(id_2);
+        recordPersistenceData.getOrCreate(id_2);
         Assert.assertEquals(2, recordPersistenceData.getCurrentAndHold().size());
 
         recordPersistenceData.getCurrentAndHold().clear();