Andres Rodriguez created BEAM-12601:
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Summary: Support append-only indices in ES output
Key: BEAM-12601
URL: https://issues.apache.org/jira/browse/BEAM-12601
Project: Beam
Issue Type: Improvement
Components: io-java-elasticsearch
Reporter: Andres Rodriguez
Currently, the Apache Beam Elasticsearch sink is
[using|https://github.com/apache/beam/blob/master/sdks/java/io/elasticsearch/src/main/java/org/apache/beam/sdk/io/elasticsearch/ElasticsearchIO.java#L1532]
the
[index|https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html#bulk-api-request-body]
bulk API operation to add data to the target index. When using append-only
indices it is better to use the
[create|https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html#bulk-api-request-body]
operation. This also applies to new append-only indexes, like [data
streams|https://www.elastic.co/guide/en/elasticsearch/reference/7.x/use-a-data-stream.html#add-documents-to-a-data-stream].
The scope of this improvement is to add a new boolean configuration option,
{{append-only}}, to the Elasticsearch sink, with a default value of {{false}}
(to keep the current behaivour) that when enabled makes it use the {{create}}
operation instead of the {{index}} one when sending data.
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