Udi Meiri created BEAM-11722:
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Summary: SpannerIO.read() parallelism limited by partition count
Key: BEAM-11722
URL: https://issues.apache.org/jira/browse/BEAM-11722
Project: Beam
Issue Type: Bug
Components: io-java-gcp, runner-dataflow
Reporter: Udi Meiri
Setting the partition size / count is not possible:
{code} Note: This hint is currently ignored by sessions.partitionQuery and
sessions.partitionRead requests.{code}
https://cloud.google.com/spanner/docs/reference/rest/v1/PartitionOptions
Adding a Reshuffle might be the only choice, but it adds time and resource
usage.
cc: [~chamikara][~nielm]
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