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Posted to commits@hudi.apache.org by "Alexey Kudinkin (Jira)" <ji...@apache.org> on 2022/12/07 22:26:00 UTC

[jira] [Created] (HUDI-5347) Fix Merge Into performance traps

Alexey Kudinkin created HUDI-5347:
-------------------------------------

             Summary: Fix Merge Into performance traps
                 Key: HUDI-5347
                 URL: https://issues.apache.org/jira/browse/HUDI-5347
             Project: Apache Hudi
          Issue Type: Bug
          Components: spark-sql
    Affects Versions: 0.12.1
            Reporter: Alexey Kudinkin
            Assignee: Alexey Kudinkin
             Fix For: 0.12.2


Merge Into currently relies on SparkSqlTypedRecord abstraction doing for *every* field of *every* record lookup in the cache keyed by Avro's Schema incurring Schema.equals (bearing non-trivial overhead), leading to 95% of the compute being wasted on it.



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