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https://issues.apache.org/jira/browse/BEAM-12504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Minbo Bae updated BEAM-12504:
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Attachment: spanner_graph.png
spanner_error.png
> SpannerIO Read SessionNotFoundException for long-running pipline
> ----------------------------------------------------------------
>
> Key: BEAM-12504
> URL: https://issues.apache.org/jira/browse/BEAM-12504
> Project: Beam
> Issue Type: Bug
> Components: io-java-gcp
> Reporter: Minbo Bae
> Priority: P2
> Attachments: spanner_error.png, spanner_graph.png
>
>
> [SpannderIO|https://github.com/apache/beam/blob/v2.30.0/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/spanner/SpannerIO.java#L328]
> creates a transaction session with
> [CreateTransaction|https://github.com/apache/beam/blob/v2.30.0/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/spanner/SpannerIO.java#L747]
> at the beginning of pipeline run. If the pipeline takes a long time to run
> SpannerIO.ReadAll like the following, the session can be [cleaned
> up|https://cloud.google.com/spanner/docs/sessions#keep_an_idle_session_alive]
> by Spanner service. The read step fails with error
> `com.google.cloud.spanner.SessionNotFoundException: NOT_FOUND:
> com.google.api.gax.rpc.NotFoundException: io.grpc.StatusRuntimeException:
> NOT_FOUND: Session not found:
> projects/<PROJECT>/instances/<INSTANCE>/databases/<DATABASE>/sessions/<SESSION_ID>`
>
> PCollection<ReadOperation> queries = pipeline
> .apply(Create.of((Void)null))
> .apply("BeforeRead", ParDo.of( ... )); // long running. for example more
> than 2 hours
> queries
> .apply(SpanerIO.readAll().withSpannerConfig(...))
> .apply("AfterRead", ParDo.of( ... ));
>
>
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