Question

我在elasticsearch中有6kk的数据需要更新。我必须使用PHP。我在文档中搜索，我发现了这个，Bulk Indexing，但这并没有保留以前的数据。

我有：

[
  {
    'name': 'Jonatahn',
    'age' : 21
  }
]

我要更新的代码：

$params =[
    "index" => "customer",
    "type" => "doc",
    "body" => [
        [
            "index" => [
                "_index" => "customer",
                "_type" => "doc",
                "_id" => "09310451939"
            ]
        ],
        [
            "name" => "Jonathan"
        ]
    ]
];

$client->bulk($params);

当我发送['name' => 'Jonathan']时，我希望名称会更新并保持年龄，但年龄已被删除。当然，我仍然可以按数据更新数据，但这需要很长时间，还有另一种方法吗？

Answer 1

我的错误是使用"index"，但正确的做法是"update"。

最终代码是：

$params =[
"index" => "customer",
"type" => "doc",
"body" => [
    [
        "update" => [
    //   ^^^^^^ Here I change from index to update
            "_index" => "customer",
            "_type" => "doc",
            "_id" => "09310451939"
        ]
    ],
    [
        "doc" => [
            "name" => "Jonathan"
        ]
    ]
]
];

$client->bulk($params);

使用上面的代码，我的数据会保留以前的数据，只是更新我传递的参数数据。

响应：

Array
(
    [took] => 7
    [timed_out] =>
    [_shards] => Array
        (
            [total] => 5
            [successful] => 5
            [skipped] => 0
            [failed] => 0
        )

    [hits] => Array
        (
            [total] => 1
            [max_score] => 1
            [hits] => Array
                (
                    [0] => Array
                        (
                            [_index] => customer
                            [_type] => doc
                            [_id] => 09310451939
                            [_score] => 1
                            [_source] => Array
                                (
                                    [name] => Jonathan
                                    [age] => 23
                                )

                        )

                )

        )

)

Answer 2

根据docs，批量API可能采取的措施是索引，创建，删除和update。 update期望在下一行指定部分doc，upsert和脚本及其选项。

POST _bulk
{ "update" : {"_id" : "1", "_type" : "_doc", "_index" : "test"} }
{ "doc" : {"field2" : "value2"} }

Answer 3

这是我的最终代码。

<?php

require_once('../elasticsearch.php');

//initialize elasticsearch
$params = array();

$params['index'] = $elastcsearch_index;
$params['type']  = $elastcsearch_type;

///////////////////////////////////////////////////
//update seeders n leechers in elasticsearch 

//get updated records
$get_updated_records = mysqli_query($conn, "SELECT content_id, seeders, leechers FROM content WHERE is_updated = '1' order by seeders DESC") ;

//create blank array
$results = array();

while($row = mysqli_fetch_assoc($get_updated_records)){
    //put all results in array
    $results[] = $row;

}   

//from https://www.elastic.co/guide/en/elasticsearch/client/php-api/current/_indexing_documents.html

$params = ['body' => []];

for($i = 0; $i < count($results); $i++) {

    $params["body"][]= [
            "update" => [
                "_index" => $elastcsearch_index,
                "_type" => $elastcsearch_type,
                "_id" => $results[$i]['content_id']
            ]
        ];

    $params["body"][]= [
            "doc" => [
                "seeders" => intval($results[$i]['seeders']) ,
                "leechers" => intval($results[$i]['leechers']) ,
            ]
        ];

    // Every 1000 documents stop and send the bulk request
     if ($i % 1000 == 0) {
        $responses = $elasticsearch->bulk($params);

        // erase the old bulk request
        $params = ['body' => []];

        // unset the bulk response when you are done to save memory
        unset($responses);
    } 
}

// Send the last batch if it exists
if (!empty($params['body'])) {
    $responses = $elasticsearch->bulk($params);
}

Elasticsearch部分批量更新

3 个答案: