Revert "[SPARK-30642][SPARK-30659][SPARK-30660][SPARK-30662]"

[zhengruifeng]

What changes were proposed in this pull request?

Revert
#27360
#27396
#27374
#27389

Why are the changes needed?

BLAS need more performace tests, specially on sparse datasets.
Perfermance test of LogisticRegression (#27374) on sparse dataset shows that blockify vectors to matrices and use BLAS will cause performance regression.
LinearSVC and LinearRegression were also updated in the same way as LogisticRegression, so we need to revert them to make sure no regression.

Does this PR introduce any user-facing change?

remove newly added param blockSize

How was this patch tested?

reverted testsuites

[dongjoon-hyun]

Wow. It's a massive revert. If you have a discussion on the other PRs, could you add some pointers into the description? What is the performance regression?

BLAS need more performace tests, specially on sparse datasets

[zhengruifeng]

@dongjoon-hyun There is some test and discussion in #27374, I also update the description.

[dongjoon-hyun]

Thank you, @zhengruifeng .

[dongjoon-hyun]

Also, cc @huaxingao since she is also the author of the last PR.

[SparkQA]

Test build #118014 has finished for PR 27487 at commit 3407dc1.

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

[SparkQA]

Test build #118016 has finished for PR 27487 at commit 255ca22.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
• class _ALSModelParams(HasPredictionCol):

[SparkQA]

Test build #118020 has finished for PR 27487 at commit 0dafab5.

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

[zhengruifeng]

retest this please

[SparkQA]

Test build #118022 has finished for PR 27487 at commit 0dafab5.

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

[SparkQA]

Test build #118029 has finished for PR 27487 at commit 7b09306.

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

[zhengruifeng]

cc @mengxr @WeichenXu123 @srowen

[WeichenXu123]

LGTM.

[zhengruifeng]

Merged to master

[srowen]

Thank you. I should have realized that sparse vectors could be an issue in the first place. That's my bad.

[zhengruifeng]

@srowen Never mind, I should have maken more perfermance tests. Maybe we should do such refactors only when we have enough time for testing. When working on these PRs, it maybe too close to the code freeze.

[viirya]

Is this to revert the PRs on branch-3.0 too? I cannot find it in branch-3.0 commits.

[zhengruifeng]

@viirya Yes, this is to revert on branch-3.0 too. I am go to revert it on 3.0. Thanks for pointing it out!