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Posted to reviews@spark.apache.org by "henrymai (via GitHub)" <gi...@apache.org> on 2023/08/01 22:10:32 UTC
[GitHub] [spark] henrymai opened a new pull request, #42278: [SPARK-44588][CORE] Fix double encryption issue for migrated shuffle blocks -- Backport to 3.4
henrymai opened a new pull request, #42278:
URL: https://github.com/apache/spark/pull/42278
### What changes were proposed in this pull request?
Fix double encryption issue for migrated shuffle blocks
Shuffle blocks upon migration are sent without decryption when io.encryption is enabled. The code on the receiving side ends up using serializer.wrapStream on the OutputStream to the file which results in the already encrypted bytes being encrypted again when the bytes are written out.
This patch removes the usage of serializerManager.wrapStream on the receiving side and also adds tests that validate that this works as expected. I have also validated that the added tests will fail if the fix is not in place.
Jira ticket with more details: https://issues.apache.org/jira/browse/SPARK-44588
### Why are the changes needed?
Migrated shuffle blocks will be double encrypted when `spark.io.encryption = true` without this fix.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Unit tests were added to test shuffle block migration with spark.io.encryption enabled and also fixes a test helper method to properly construct the SerializerManager with the encryption key.
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[GitHub] [spark] henrymai closed pull request #42278: [SPARK-44588][CORE] Fix double encryption issue for migrated shuffle blocks -- Backport to 3.4
Posted by "henrymai (via GitHub)" <gi...@apache.org>.
henrymai closed pull request #42278: [SPARK-44588][CORE] Fix double encryption issue for migrated shuffle blocks -- Backport to 3.4
URL: https://github.com/apache/spark/pull/42278
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