kennknowles opened a new issue, #19065:
URL: https://github.com/apache/beam/issues/19065
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/32a427c)
*
[https://github.com/apache/beam/commit/8151d82](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
Imported from Jira
[BEAM-4750](https://issues.apache.org/jira/browse/BEAM-4750). Original Jira may
contain additional context.
Reported by: janotav.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
