Derek He created BEAM-8306:
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Summary: improve estimation of data byte size reading from source
in ElasticsearchIO
Key: BEAM-8306
URL: https://issues.apache.org/jira/browse/BEAM-8306
Project: Beam
Issue Type: Improvement
Components: sdk-java-core
Affects Versions: 2.14.0
Reporter: Derek He
ElasticsearchIO splits BoundedSource based on the Elasticsearch index size. We
expect it can be more accurate to split it base on query result size.
Currently, we have a big Elasticsearch index. But for query result, it only
contains a few documents in the index. But ElasticsearchIO splits it into up
to1024 BoundedSources in Google dataflow. It takes long time to finish the
processing the small numbers of Elasticsearch document in Google dataflow.
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