Knut Olav Loite created BEAM-3506:
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Summary: JdbcIO: Support writing iterables (i.e. collections) of
rows instead of only single rows
Key: BEAM-3506
URL: https://issues.apache.org/jira/browse/BEAM-3506
Project: Beam
Issue Type: Improvement
Components: sdk-java-extensions
Affects Versions: 2.3.0
Reporter: Knut Olav Loite
Assignee: Reuven Lax
The current JdbcIO write interface expects a PCollection<T> where T is the row
to be written. Each instance of T is then added to a batch and written to the
database. The user has little control over how many rows will be added to one
batch. If JdbcIO would also support writing a PCollection<Iterable<T>> the user
would have more control over the number of rows in one batch. Especially when
writing to cloud databases, such as Google Cloud Spanner, the batching of
multiple rows together is important for performance.
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