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Kenneth Knowles updated BEAM-4750: ---------------------------------- Labels: stale-assigned (was: ) > Beam performance degraded significantly since 2.4 > ------------------------------------------------- > > Key: BEAM-4750 > URL: https://issues.apache.org/jira/browse/BEAM-4750 > Project: Beam > Issue Type: Bug > Components: runner-core > Affects Versions: 2.4.0, 2.5.0, 2.6.0, 2.7.0, 2.8.0, 2.9.0 > Reporter: Vojtech Janota > Assignee: Kenneth Knowles > Priority: P1 > Labels: stale-assigned > > Starting from Beam 2.4 onwards the *InMemoryStateInternals* class in the > *beam-runners-core-java* module does an expensive Coder encode/decode > operation when copying object state. This has significant impact on > performance and pipelines that previously took low minutes do not finish > within hours in our case. Based on the discussion on the dev mailing list, > the main motivation for this change was to enforce Coder sanity, something > that should arguably remain within the realm of the DirectRunner and should > not leak into the core layer. > Links to commits that introduced the new behaviour: > * [https://github.com/apache/beam/commit/32a427c] > * [https://github.com/apache/beam/commit/8151d82] > > Additional details and surrounding discussion can be found here: > * > https://lists.apache.org/thread.html/1e329318a4dafe27b9ff304d9460d05d8966e5ceebaf4ebfb948e2b8@%3Cdev.beam.apache.org%3E > -- This message was sent by Atlassian Jira (v8.3.4#803005)