Mike Pedersen created BEAM-6670:
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Summary: Option to disable reparallelization in JdbcIO.Read
Key: BEAM-6670
URL: https://issues.apache.org/jira/browse/BEAM-6670
Project: Beam
Issue Type: Wish
Components: sdk-java-core
Reporter: Mike Pedersen
I'm doing approx. 20 JDBC queries against a database and then joining them
together in a group by. Every single one of these queries does a reshuffle,
which is sort of useless due to them being fed to a CoGroupByKey immediately
afterwards.
Reshuffle by default seems sensible by the principle of least surprise, but it
would be nice to have a way to disable it when it's not necessary. For example
a "withReshuffle(boolean)" method.
This should be an easy addition and I am willing to add this if it sounds
reasonable enough.
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