Reindex数据从Elasticsearch 1.X到具有旧_timeStamp的ElastichSearch到新的Field [英] Reindex data from Elasticsearch 1.X to ElastichSearch with old _timeStamp to new Field

问题描述

我正在尝试将我的数据从旧的弹性搜索（1.4.4）集群迁移到新的（5.1）

I am trying to migrate my data from an old Elasticsearch(Version 1.4.4) Cluster to a new one (5.1)

我正在使用 reindex api在新的弹性搜索，但是不能将旧的 _timestamp 转到新的字段 timestamp 。其他一切工作正常。

I am using the reindex api in the new Elasticsearch, but can't get the old _timestamp to a new field timestamp. Everything else works fine.

POST _reindex
{
  "source": {
    "remote": {
      "host": "http://oldhost:9200"
    },
    "index": "source",
    "query": {
       "match_all": {}
    }
  },
  "dest": {
    "index": "dest"
  }
}

有没有办法添加脚本标签来设置新字段 timestamp 从旧的 _timestamp ？

Are there any way to add a script tag to set the new field timestamp from the old _timestamp?

推荐答案

我'不能100％确定这将工作，但使用 reindex API ，您可以指定一些可能读取旧的 _timestamp 字段的脚本（尽管我从未尝试过） / p>

I'm not 100% certain this will work, but using the reindex API you can specify a tiny bit of script that might be able to read the old _timestamp field (although I've never tried it personally):

POST _reindex
{
  "source": {
    "remote": {
      "host": "http://oldhost:9200"
    },
    "index": "source"
    "query": {
       "match_all": {}
    }
  },
  "dest": {
    "index": "dest"
  },
  "script": {
    "lang": "painless",
    "inline": "ctx._source.timestamp = ctx._timestamp"
  }
}

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