我正在尝试使用以下Java代码
创建弹性搜索索引 public class MappingCreator {
static Logger log = Logger.getLogger(MappingCreator.class.getName());
final static String indexName = "indxyz";
final static String typeName = "indtype";
final static String mappingFileName = "customMapping.json";
final static String clusterName = "elasticsearch";
final static String hostName = "localhost";
public static void main(String args[]) throws IOException
{
MappingCreator mapCreator = new MappingCreator();
Client myESclient = getClient();
IndicesExistsResponse res = myESclient.admin().indices().prepareExists(indexName).execute().actionGet();
if (res.isExists()) {
log.warn("Index "+indexName +" already exists. Will be deleted");
final DeleteIndexRequestBuilder deleteIndexBuilder = myESclient.admin().indices().prepareDelete(indexName);
deleteIndexBuilder.execute().actionGet();
}
final CreateIndexRequestBuilder createIndexBuilder = myESclient.admin().indices().prepareCreate(indexName)
.addMapping(typeName, mapCreator.getIndexFieldMapping());
CreateIndexResponse createIndexResponse = createIndexBuilder.execute().actionGet();
log.debug("Created mapping "+createIndexResponse.toString());
myESclient.close();
}
private String getIndexFieldMapping() throws IOException {
return IOUtils.toString(getClass().getClassLoader().getResourceAsStream(mappingFileName));
}
private static Client getClient() {
TransportClient transportClient = null;
try
{
Settings settings = ImmutableSettings.settingsBuilder().put("cluster.name", clusterName).build();
transportClient = new TransportClient(settings);
transportClient = transportClient.addTransportAddress(new InetSocketTransportAddress(hostName, 9300));
}
catch (Exception e)
{
log.error("Error in MappingCreator creating Elastic Search Client\n"
+ "Message "+e.getMessage()+"\n"
+ "StackTrace "+e.getStackTrace()
);
}
return (Client) transportClient;
}
}
customMapping.json看起来像这样
{
"properties": {
"popkDate": {
"type":"date",
"format": "yyyy-MM-dd 'T' HH:mm:ss.SSZ"
},
"popk": {
"type": "string"
}
}
}
现在，在创建映射后，如果我在elasticsearch marvel插件中运行以下内容
get indxyz/
我得到了
{
"indxyz": {
"aliases": {},
"mappings": {
"indtype": {
"properties": {
"popkDate": {
"type": "date",
"format": "yyyy-MM-dd 'T' HH:mm:ss.SSZ"
},
"popk": {
"type": "string"
}
}
}
}
这是准确的。
现在当我尝试摄取这些数据时
{
"popkDate":"2001-01-01T235959.00-0400",
"popk":"cuinbcwenvubn"
}
由于某种原因，popkDate字段被索引为String，而不是Date。现在，如果我再看看
get indxyz/
这次我得到了，
{
"indxyz": {
"aliases": {},
"mappings": {
"indtype": {
"properties": {
"popkDate": {
"type": "date",
"format": "yyyy-MM-dd 'T' HH:mm:ss.SSZ"
},
"popk": {
"type": "string"
}
}
},
"indtype": {
"properties": {
"popkDate": {
"type": "string"
},
"popk": {
"type": "string"
}
}
}
}
为什么要创建这个重复的映射？对于同一类型？请注意，如果我创建没有JAVA api的映射，即通过curl命令，则不会观察到此行为，并且popkDate字段将按预期编制索引。为什么会这样？
请告知。