Status

Current state:  Under Discussion

Discussion thread: http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/Discussion-flink-elasticsearch-connector-supports-td42082.html#a42106

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• We split es type(it is index in high version, because every index just has one default type, and default type is docs) into different ElasticSearchInputSplit. One split corresponds to one shard.
• The split doesn't contain slice info, which you can see below 
  
  • You can read here https://www.jianshu.com/p/d32e17dab90c, which is
    chinese.But you can konw that slice api has poor performance in es-hadoop
    project .
    
  • And i found that es-hadoop(https://github.com/elastic/elasticsearch-hadoop) has removed this and disable sliced scrolls by
    default. you can see below, which i found in the lastest es-hadoop release
    version
    
  • Configuration Changes
    `es.input.use.sliced.partitions` is deprecated in 6.5.0, and will be removed
    in 7.0.0. The default value for `es.input.max.docs.per.partition` (100000)
    will also be removed in 7.0.0, thus disabling sliced scrolls by default, and
    switching them to be an explicitly opt-in feature.

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