不爲也 比不能也

Transport client has been movededitThe Java transport client has been moved to its own module which can be referenced using:Java transport client는 다음을 사용하여 참조할 수 있는 자체 module로 옮겨졌다. org.elasticsearch.client transport 5.0.0 The transport client is now created using the following snippet:이제 transport client는 다음 code를 이용하여 생성한다.TransportClient client = new PreBuiltTransportClient(Settings.EMPTY) .a..

APT/YUM repository URL changeseditThe repository for apt and yum packages has changed from https://packages.elastic.co to https://artifacts.elastic.co/.apt와 yum package repository가 https://packages.elastic.co 에서 https://artifacts.elastic.co/로 변경되었다.Full details can be found in Installing Elasticsearch.자세한 사항은 Installing Elasticsearch에서 알 수 있다.Default logging using systemd (since Elasticsearch 2...

The command bin/plugin has been renamed to bin/elasticsearch-plugin. The structure of the plugin ZIP archive has changed. All the plugin files must be contained in a top-level directory called elasticsearch. If you use the gradle build, this structure is automatically generated.bin/plugin command는 bin/elasticsearch-plugin 으로 이름이 변경되었다. plugin ZIP archive의 구조가 변경되었다. 모든 plugin 파일은 elasticsearch 라..

Only a subset of index files were open with mmap on Elasticsearch 2.x. As of Elasticsearch 5.0, all index files will be open with mmap on 64-bit systems. While this may increase the amount of virtual memory used by Elasticsearch, there is nothing to worry about since this is only address space consumption and the actual memory usage of Elasticsearch will stay similar to what it was in 2.x. See h..

In prior versions of Elasticsearch, the path.data directory included a folder for the cluster name, so that data was in a folder such as $DATA_DIR/$CLUSTER_NAME/nodes/$nodeOrdinal. In 5.0 the cluster name as a directory is deprecated. Data will now be stored in $DATA_DIR/nodes/$nodeOrdinal if there is no existing data. Upon startup, Elasticsearch will check to see if the cluster folder exists an..

Significant terms on numeric fieldseditNumeric fields have been refactored to use a different data structure that performs better for range queries. However, since this data structure does not record document frequencies, numeric fields need to fall back to running queries in order to estimate the number of matching documents in the background set, which may incur a performance degradation.numer..

Switched Default Language from Groovy to PainlesseditThe default scripting language for Elasticsearch is now Painless. Painless is a custom-built language with syntax similar to Groovy designed to be fast as well as secure. Many Groovy scripts will be identitical to Painless scripts to help make the transition between languages as simple as possible.Elasticsearch의 기본 script 언어는 이제 Painless이다. Pa..