[SPARK-34359][SQL][3.1] Add a legacy config to restore the output schema of SHOW DATABASES #31486
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…f SHOW DATABASES This is a followup of apache#26006 In apache#26006 , we merged the v1 and v2 SHOW DATABASES/NAMESPACES commands, but we missed a behavior change that the output schema of SHOW DATABASES becomes different. This PR adds a legacy config to restore the old schema, with a migration guide item to mention this behavior change. Improve backward compatibility No (the legacy config is false by default) a new test Closes apache#31474 from cloud-fan/command-schema. Lead-authored-by: Wenchen Fan <cloud0fan@gmail.com> Co-authored-by: Wenchen Fan <wenchen@databricks.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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Kubernetes integration test starting |
HyukjinKwon
approved these changes
Feb 5, 2021
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Kubernetes integration test status failure |
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Test build #134924 has finished for PR 31486 at commit
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merging to 3.1/3.0! |
cloud-fan
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…ema of SHOW DATABASES This backports #31474 to 3.1/3.0 ### What changes were proposed in this pull request? This is a followup of #26006 In #26006 , we merged the v1 and v2 SHOW DATABASES/NAMESPACES commands, but we missed a behavior change that the output schema of SHOW DATABASES becomes different. This PR adds a legacy config to restore the old schema, with a migration guide item to mention this behavior change. ### Why are the changes needed? Improve backward compatibility ### Does this PR introduce _any_ user-facing change? No (the legacy config is false by default) ### How was this patch tested? a new test Closes #31486 from cloud-fan/command-schema. Authored-by: Wenchen Fan <cloud0fan@gmail.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com>
cloud-fan
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Feb 5, 2021
…ema of SHOW DATABASES This backports #31474 to 3.1/3.0 This is a followup of #26006 In #26006 , we merged the v1 and v2 SHOW DATABASES/NAMESPACES commands, but we missed a behavior change that the output schema of SHOW DATABASES becomes different. This PR adds a legacy config to restore the old schema, with a migration guide item to mention this behavior change. Improve backward compatibility No (the legacy config is false by default) a new test Closes #31486 from cloud-fan/command-schema. Authored-by: Wenchen Fan <cloud0fan@gmail.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com> (cherry picked from commit 7c87b48) Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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+1, late LGTM. Thanks! |
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This backports #31474 to 3.1/3.0
What changes were proposed in this pull request?
This is a followup of #26006
In #26006 , we merged the v1 and v2 SHOW DATABASES/NAMESPACES commands, but we missed a behavior change that the output schema of SHOW DATABASES becomes different.
This PR adds a legacy config to restore the old schema, with a migration guide item to mention this behavior change.
Why are the changes needed?
Improve backward compatibility
Does this PR introduce any user-facing change?
No (the legacy config is false by default)
How was this patch tested?
a new test