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https://issues.apache.org/jira/browse/BEAM-6764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17148005#comment-17148005
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Beam JIRA Bot commented on BEAM-6764:
-------------------------------------
This issue was marked "stale-P2" and has not received a public comment in 14
days. It is now automatically moved to P3. If you are still affected by it, you
can comment and move it back to P2.
> OutOfMemory Exception in Dataflow Spanner Write Mutations
> ---------------------------------------------------------
>
> Key: BEAM-6764
> URL: https://issues.apache.org/jira/browse/BEAM-6764
> Project: Beam
> Issue Type: Bug
> Components: io-java-gcp
> Affects Versions: 2.9.0, 2.10.0, 2.11.0
> Reporter: Joshua
> Priority: P3
>
> Since I upgraded my apache beam sdk version to >= 2.9.0, I have been noticing
> OOM exceptions while using the dataflow runner to write mutations to spanner.
> I have been using n1-standard-4 since version 2.9.0. On that version, it
> works. But on higher versions, I get the exception.
>
> The stackdriver logs is provided below
> {code:java}
> java.lang.OutOfMemoryError: Java heap space
> java.util.ArrayList.<init>(ArrayList.java:152)
> org.apache.beam.sdk.io.gcp.spanner.SpannerIO$GatherBundleAndSortFn.initSorter(SpannerIO.java:1056)
> org.apache.beam.sdk.io.gcp.spanner.SpannerIO$GatherBundleAndSortFn.startBundle(SpannerIO.java:1049)
> {code}
> I have a very basic PTransform for writing to Spanner:
> {code:java}
> SpannerIO.write().withInstanceId(options.getSpannerInstanceId())
> .withDatabaseId(options.getSpannerDatabaseId())
> .withProjectId(options.getProject())
> .withFailureMode(SpannerIO.FailureMode.REPORT_FAILURES);
> {code}
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