Add "Partial-Update" Function #35
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stevenay
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Details
Normally if we want to update an existing document, we have to reindex or replace it.
By ElasticSearch's
updateAPI, it can be able to do partial updates to a document. ThisupdateAPI is more efficient and reliable. According to *"elastic" guide,"The difference is that this process happens within a shard, thus avoiding the network overhead of multiple requests. By reducing the time between the retrieve and reindex steps, we also reduce the likelihood of there being conflicting changes from other processes."
In this
updateIndex(), existing scalar fields (columns) are overwritten, and new fields (columns) are added to the index.