如何在solrj中使用Solr的所有内核

Question

public static void main(String[] args) throws IOException, SolrServerException {

    HttpSolrClient solrClient =  new HttpSolrClient("http://localhost:8983/solr/core1"); //$NON-NLS-1$4
    //HttpSolrClient solrClient =  new HttpSolrClient(args[0]); //$NON-NLS-1$4

    // Empty the database...
    solrClient.deleteByQuery( "*:*" );// delete everything! //$NON-NLS-1$
    System.out.println("cleared"); //$NON-NLS-1$
    ArrayList<SolrInputDocument> docs = new ArrayList<>();

    long starttime = System.currentTimeMillis();
    for (int i = 0; i < 1000000; ++i) { 
        SolrInputDocument doc = new SolrInputDocument();
        doc.addField("bat", "book"+i); //$NON-NLS-1$ //$NON-NLS-2$
        doc.addField("id", "book id -" + i); //$NON-NLS-1$ //$NON-NLS-2$
        doc.addField("name", "The Legend of the Hobbit part 1 " + i); //$NON-NLS-1$ //$NON-NLS-2$
        doc.addField("id1", "book id -" + i); //$NON-NLS-1$ //$NON-NLS-2$
        doc.addField("name1", "The Legend of the Hobbit part 2 " + i); //$NON-NLS-1$ //$NON-NLS-2$
        doc.addField("id2", "book id -" + i); //$NON-NLS-1$ //$NON-NLS-2$

        docs.add(doc);

        if (i % 250000 == 0) {
            solrClient.add(docs);
            System.out.println("added "+ i + "documents"); //$NON-NLS-1$ //$NON-NLS-2$
            docs.clear();
        }
    }
    solrClient.add(docs);
    System.out.println("completed adding to Solr. Now commiting.. Please wait"); //$NON-NLS-1$
    solrClient.commit();
    long endtime = System.currentTimeMillis();
    System.out.println("process completed in "+(endtime-starttime)/1000+" seconds"); //$NON-NLS-1$ //$NON-NLS-2$
}

运行代码后，我检查http://localhost:8983/solr/#/~cores/core1并看到1000000个索引文档。

然后我添加了另一个核心（以与核心1相似的方式命名为核心2)，然后再次运行该作业，这一次，我看到核心2没有显示任何文档，只有核心1仍然显示。

有没有人可以建议一下如何使用solr的内核来分发和存储文档，这样我就可以更快地索引数据，我的假设是，如果增加内核的数量，索引的速度应该会提高。

多谢了。

Answer 1

在您的代码中，它仍然指向Core1。

HttpSolrClient solrClient =  new HttpSolrClient("http://localhost:8983/solr/core1"

如果您想获得core2的索引

你需要在这里换衣服

HttpSolrClient solrClient =  new HttpSolrClient("http://localhost:8983/solr/core2"