wu-sheng commented on a change in pull request #6499:
URL: https://github.com/apache/skywalking/pull/6499#discussion_r589048240



##########
File path: 
oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/base/StorageEsInstaller.java
##########
@@ -38,68 +42,165 @@
 @Slf4j
 public class StorageEsInstaller extends ModelInstaller {
     private final Gson gson = new Gson();
-
     private final StorageModuleElasticsearchConfig config;
     protected final ColumnTypeEsMapping columnTypeEsMapping;
 
+    /**
+     * The mappings of the template .
+     */
+    private final Map<String, Map<String, Object>> tables;
+
     public StorageEsInstaller(Client client,
                               ModuleManager moduleManager,
-                              final StorageModuleElasticsearchConfig config) {
+                              StorageModuleElasticsearchConfig config) throws 
StorageException {
         super(client, moduleManager);
         this.columnTypeEsMapping = new ColumnTypeEsMapping();
         this.config = config;
+        this.tables = new HashMap<>();
     }
 
     @Override
     protected boolean isExists(Model model) throws StorageException {
         ElasticSearchClient esClient = (ElasticSearchClient) client;
+        String tableName = IndexController.INSTANCE.getTableName(model);
+        IndexController.LogicIndicesRegister.registerRelation(model.getName(), 
tableName);
         try {
-            if (model.isTimeSeries()) {
-                return esClient.isExistsTemplate(model.getName()) && 
esClient.isExistsIndex(
-                    TimeSeriesUtils.latestWriteIndexName(model));
-            } else {
-                return esClient.isExistsIndex(model.getName());
+            if (!model.isTimeSeries()) {
+                return esClient.isExistsIndex(tableName);
             }
+            boolean exist = esClient.isExistsTemplate(tableName)
+                && 
esClient.isExistsIndex(TimeSeriesUtils.latestWriteIndexName(model));
+            if (RunningMode.isInitMode() && 
IndexController.INSTANCE.isAggregationMode(model)) {
+                appendTemplateMapping(tableName, (Map<String, Object>) 
esClient.getTemplate(tableName).get("mappings"));
+                exist = exist && isTemplateMappingCompatible(tableName, 
createMapping(model));
+            }
+            return exist;
         } catch (IOException e) {
             throw new StorageException(e.getMessage());
         }
     }
 
     @Override
     protected void createTable(Model model) throws StorageException {
+        if (model.isTimeSeries()) {
+            createTimeSeriesTable(model);
+        } else {
+            createNormalTable(model);
+        }
+    }
+
+    private void createNormalTable(Model model) throws StorageException {
         ElasticSearchClient esClient = (ElasticSearchClient) client;
+        String tableName = IndexController.INSTANCE.getTableName(model);
+        IndexController.LogicIndicesRegister.registerRelation(model.getName(), 
tableName);
+        try {
+            if (!esClient.isExistsIndex(tableName)) {
+                boolean isAcknowledged = esClient.createIndex(tableName);
+                log.info("create {} index finished, isAcknowledged: {}", 
tableName, isAcknowledged);
+                if (!isAcknowledged) {
+                    throw new StorageException("create " + tableName + " time 
series index failure, ");
+                }
+            }
+        } catch (IOException e) {
+            throw new StorageException("cannot create the normal index", e);
+        }
+    }
 
+    private void createTimeSeriesTable(Model model) throws StorageException {
+        ElasticSearchClient esClient = (ElasticSearchClient) client;
+        String tableName = IndexController.INSTANCE.getTableName(model);
+        IndexController.LogicIndicesRegister.registerRelation(model.getName(), 
tableName);
         Map<String, Object> settings = createSetting(model);
         Map<String, Object> mapping = createMapping(model);
-        log.info("index {}'s columnTypeEsMapping builder str: {}", 
esClient.formatIndexName(model.getName()), mapping
-            .toString());
-
+        String indexName = TimeSeriesUtils.latestWriteIndexName(model);
         try {
-            String indexName;
-            if (!model.isTimeSeries()) {
-                indexName = model.getName();
-            } else {
-                if (!esClient.isExistsTemplate(model.getName())) {
-                    boolean isAcknowledged = 
esClient.createTemplate(model.getName(), settings, mapping);
-                    log.info(
-                        "create {} index template finished, isAcknowledged: 
{}", model.getName(), isAcknowledged);
-                    if (!isAcknowledged) {
-                        throw new StorageException("create " + model.getName() 
+ " index template failure, ");
-                    }
-                }
-                indexName = TimeSeriesUtils.latestWriteIndexName(model);
+            boolean updateTemplate = !esClient.isExistsTemplate(tableName);
+            if (!updateTemplate) {
+                appendTemplateMapping(tableName, (Map<String, Object>) 
esClient.getTemplate(tableName)
+                                                                               
.get("mappings"));
+                updateTemplate = !isTemplateMappingCompatible(tableName, 
mapping);
             }
-            if (!esClient.isExistsIndex(indexName)) {
-                boolean isAcknowledged = esClient.createIndex(indexName);
-                log.info("create {} index finished, isAcknowledged: {}", 
indexName, isAcknowledged);
+            if (updateTemplate) {
+                Map<String, Object> templateMapping = 
appendTemplateMapping(tableName, mapping);
+                boolean isAcknowledged = 
esClient.createOrUpdateTemplate(tableName, settings, templateMapping);
+                log.info("create {} index template finished, isAcknowledged: 
{}", tableName, isAcknowledged);
                 if (!isAcknowledged) {
-                    throw new StorageException("create " + indexName + " time 
series index failure, ");
+                    throw new IOException("create " + tableName + " index 
template failure, ");
                 }
-            }
 
+                if (esClient.isExistsIndex(indexName)) {
+                    Map<String, Object> historyMapping = (Map<String, Object>) 
esClient.getIndex(indexName)
+                                                                               
        .get("mappings");
+                    Map<String, Object> appendMapping = 
extractAppendMapping(templateMapping, historyMapping);
+                    if (appendMapping.size() > 0) {
+                        esClient.updateIndexMapping(indexName, appendMapping);
+                    }
+                } else {
+                    isAcknowledged = esClient.createIndex(indexName);
+                    log.info("create {} index finished, isAcknowledged: {}", 
indexName, isAcknowledged);
+                    if (!isAcknowledged) {
+                        throw new StorageException("create " + indexName + " 
time series index failure, ");
+                    }
+                }
+            }
         } catch (IOException e) {
-            throw new StorageException(e.getMessage());
+            throw new StorageException("cannot create " + tableName + " index 
template", e);
+        }
+    }
+
+    private Map<String, Object> extractAppendMapping(final Map<String, Object> 
latestMapping,
+                                                     final Map<String, Object> 
historyMapping) {
+        Map<String, Object> checkingFields = 
getColumnProperties(latestMapping);
+        Map<String, Object> existFields = getColumnProperties(historyMapping);
+        Map<String, Object> newFields = checkingFields.entrySet()
+                                                      .stream()
+                                                      .filter(item -> 
!existFields.containsKey(item.getKey()))
+                                                      
.collect(Collectors.toMap(
+                                                          Map.Entry::getKey, 
Map.Entry::getValue));
+        Map<String, Object> mapping = createEmptyMapping();
+        Map<String, Object> properties = getColumnProperties(mapping);
+        newFields.forEach(properties::put);
+        return mapping;
+    }
+
+    /**
+     * Append the mapping to the tables with the same table name key.
+     */
+    private Map<String, Object> appendTemplateMapping(String tableName, 
Map<String, Object> mapping) {

Review comment:
       `appendTemplateMapping` -> `resolveTemplateMapping`.
   Please add comments about return value.




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