[SPARK-29643][SQL] ALTER TABLE/VIEW (DROP PARTITION) should look up catalog/table like v2 commands by huaxingao · Pull Request #26303 · apache/spark

huaxingao · 2019-10-30T03:41:49Z

What changes were proposed in this pull request?

Add AlterTableDropPartitionStatement and make ALTER TABLE/VIEW ... DROP PARTITION go through the same catalog/table resolution framework of v2 commands.

Why are the changes needed?

It's important to make all the commands have the same table resolution behavior, to avoid confusing end-users. e.g.

USE my_catalog
DESC t // success and describe the table t from my_catalog
ALTER TABLE t DROP PARTITION (id=1)  // report table not found as there is no table t in the session catalog

Does this PR introduce any user-facing change?

Yes. When running ALTER TABLE/VIEW ... DROP PARTITION, Spark fails the command if the current catalog is set to a v2 catalog, or the table name specified a v2 catalog.

How was this patch tested?

Unit tests.

SparkQA · 2019-10-30T07:05:02Z

Test build #112880 has finished for PR 26303 at commit ea3c66c.

This patch fails due to an unknown error code, -9.
This patch merges cleanly.
This patch adds no public classes.

huaxingao · 2019-10-30T17:08:44Z

@viirya @imback82 Could you please review? Do I need to follow the implementation in #26304?

imback82 · 2019-10-30T17:17:38Z

This command doesn't need to follow #26041.

+@cloud-fan

imback82 · 2019-10-30T17:18:59Z

-    | ALTER TABLE tableIdentifier
+    | ALTER TABLE  multipartIdentifier
        DROP (IF EXISTS)? partitionSpec (',' partitionSpec)* PURGE?    #dropTablePartitions
    | ALTER VIEW tableIdentifier


Since view is not supported, can we just combine this with table as (TABLE | VIEW)? @cloud-fan can confirm.

Can we check if the feature sets are the same between table and view? I know some ALTER TABLE commands have a view version in the parser, but not sure if it applies to all ALTER TABLE commands.

If there are only a few ALTER VIEW parser rules, let's keep them separated.

ALTER TABLE ... DROP PARTITION has an optional PURGE in the end, but ALTER TABLE doesn't. I guess keep them separated? They use the same parser rule, though.

cloud-fan · 2019-10-31T02:53:32Z

    | ALTER TABLE tableIdentifier
        from=partitionSpec RENAME TO to=partitionSpec                  #renameTablePartition
-    | ALTER TABLE tableIdentifier
+    | ALTER TABLE  multipartIdentifier


nit: one space not two

cloud-fan · 2019-10-31T02:56:25Z

+    | ALTER TABLE  multipartIdentifier
        DROP (IF EXISTS)? partitionSpec (',' partitionSpec)* PURGE?    #dropTablePartitions
    | ALTER VIEW tableIdentifier
        DROP (IF EXISTS)? partitionSpec (',' partitionSpec)*           #dropTablePartitions


Sorry I missed it. These 2 parser rules share the same label, so they are essentially one rule.
I agree with @imback82 that it's better to merge them:

ALTER TABLE | VIEW multipartIdentifier DROP (IF EXISTS)? partitionSpec (',' partitionSpec)* PURGE?

viirya · 2019-10-31T06:14:40Z

Please also update the PR title (adding VIEW).

SparkQA · 2019-10-31T07:05:02Z

Test build #112992 has finished for PR 26303 at commit 12a8ad6.

This patch fails due to an unknown error code, -9.
This patch merges cleanly.
This patch adds no public classes.

cloud-fan · 2019-10-31T07:17:44Z

retest this please

SparkQA · 2019-10-31T11:22:53Z

Test build #113004 has finished for PR 26303 at commit 12a8ad6.

This patch fails SparkR unit tests.
This patch merges cleanly.
This patch adds no public classes.

cloud-fan · 2019-10-31T11:50:36Z

retest this please

SparkQA · 2019-10-31T15:58:39Z

Test build #113026 has finished for PR 26303 at commit 12a8ad6.

This patch fails SparkR unit tests.
This patch merges cleanly.
This patch adds no public classes.

huaxingao · 2019-10-31T16:53:49Z

retest this please

viirya · 2019-10-31T17:50:32Z

retest this please.

SparkQA · 2019-10-31T21:37:27Z

Test build #113040 has finished for PR 26303 at commit 12a8ad6.

This patch passes all tests.
This patch merges cleanly.
This patch adds no public classes.

SparkQA · 2019-11-01T01:36:23Z

Test build #113049 has finished for PR 26303 at commit faa2361.

This patch passes all tests.
This patch merges cleanly.
This patch adds no public classes.

…g/table like v2 commands

SparkQA · 2019-11-01T10:10:37Z

Test build #113076 has finished for PR 26303 at commit 07dbe47.

This patch passes all tests.
This patch merges cleanly.
This patch adds no public classes.

cloud-fan · 2019-11-01T10:29:18Z

thanks, merging to master!

huaxingao · 2019-11-01T17:07:03Z

Thanks! @cloud-fan @viirya @imback82

dongjoon-hyun added the SQL label Oct 30, 2019

imback82 reviewed Oct 30, 2019

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cloud-fan reviewed Oct 31, 2019

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huaxingao force-pushed the spark-29643 branch from ea3c66c to 163e448 Compare October 31, 2019 04:41

viirya approved these changes Oct 31, 2019

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huaxingao changed the title ~~[SPARK-29643][SQL] ALTER TABLE (DROP PARTITION) should look up catalog/table like v2 commands~~ [SPARK-29643][SQL] ALTER TABLE/VIEW (DROP PARTITION) should look up catalog/table like v2 commands Oct 31, 2019

cloud-fan approved these changes Oct 31, 2019

View reviewed changes

imback82 approved these changes Oct 31, 2019

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huaxingao added 5 commits October 31, 2019 23:15

[SPARK-29643][SQL] ALTER TABLE (DROP PARTITION) should look up catalo…

650b74f

…g/table like v2 commands

add a space

4fb2527

address comments

29eaeea

remove alter view drop partition

e563ea0

address comments

07dbe47

huaxingao force-pushed the spark-29643 branch from faa2361 to 07dbe47 Compare November 1, 2019 06:19

cloud-fan closed this in 14337f6 Nov 1, 2019

huaxingao deleted the spark-29643 branch November 1, 2019 17:07

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What changes were proposed in this pull request?

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huaxingao commented Oct 30, 2019 •

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