Elasticsearch在Elasticsearch 2.3.0中发布了新的Reindex API,当前版本的NEST(2.1.1)是否已使用此api?如果没有,有计划这样做吗?
我知道当前版本有一个reindex方法,但是它迫使您创建新索引。对于我的用例,索引已经存在。

任何反馈/见解将不胜感激。谢谢!

最佳答案

最好在github issues for NEST上问这种问题,因为项目的提交者将能够最好地回答:)

Elasticsearch 2.3.0中提供了A commit went in on 6 April to map the new Reindex API以及其他功能,例如Task Management APIUpdate By Query。这进入了NEST 2.3.0

NEST 2.x已经包含一个用于进行重新索引的助手,该助手在幕后使用了scan / scroll并返回了IObservable<IReindexResponse<T>>,可用于观察进度

public class Document {}

var observable = client.Reindex<Document>("from-index", "to-index", r => r
    // settings to use when creating to-index
    .CreateIndex(c => c
        .Settings(s => s
            .NumberOfShards(5)
            .NumberOfReplicas(2)
        )
    )
    // query to optionally limit documents re-indexed from from-index to to-index
    .Query(q => q.MatchAll())
    // the number of documents to reindex in each request.
    // NOTE: The number of documents in each request will actually be
    //     NUMBER * NUMBER OF SHARDS IN from-index
    // since reindex uses scan/scroll
    .Size(100)
);

var observer = new ReindexObserver<Document>(
    onNext: reindexResponse =>
    {
        // do something with notification. Maybe log total progress
    },
    onError: exception =>
    {
        throw exception;
    },
    completed: () =>
    {
        // Maybe log completion, refresh the index, etc..
    }
);

observable.Subscribe(observer);

看一下ReIndex API tests的一些想法。

新的Reindex API在客户端中名为client.ReIndexOnServer(),以将其与现有的可观察实现区分开。

关于elasticsearch - 巢-重新编制索引,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/36508292/

10-10 13:12