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executor: ddl jobs microsecond #52930

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@dveeden dveeden commented Apr 26, 2024 •
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What problem does this PR solve?

Issue Number: close #52929

Problem Summary:

What changed and how does it work?

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No need to test
    • I checked and no code files have been changed.

Side effects

  • Performance regression: Consumes more CPU
  • Performance regression: Consumes more Memory
  • Breaking backward compatibility

Documentation

  • Affects user behaviors
  • Contains syntax changes
  • Contains variable changes
  • Contains experimental features
  • Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

The time columns in `information_schema.DDL_JOBS` now support microsecond information.

Test

Before:

mysql> SELECT JOB_ID,START_TIME,END_TIME,TIMEDIFF(END_TIME,START_TIME),TIMESTAMPDIFF(MICROSECOND,START_TIME,END_TIME),END_TIME=START_TIME,CONVERT(END_TIME USING utf8mb4) = CONVERT(START_TIME USING utf8mb4) FROM information_schema.DDL_JOBS ORDER BY TIMEDIFF(END_TIME,START_TIME) DESC LIMIT 20;
+--------+---------------------+---------------------+-------------------------------+------------------------------------------------+---------------------+---------------------------------------------------------------------+
| JOB_ID | START_TIME          | END_TIME            | TIMEDIFF(END_TIME,START_TIME) | TIMESTAMPDIFF(MICROSECOND,START_TIME,END_TIME) | END_TIME=START_TIME | CONVERT(END_TIME USING utf8mb4) = CONVERT(START_TIME USING utf8mb4) |
+--------+---------------------+---------------------+-------------------------------+------------------------------------------------+---------------------+---------------------------------------------------------------------+
|  10106 | 2024-04-26 11:20:02 | 2024-04-26 11:20:17 | 00:00:15                      |                                       15102000 |                   0 |                                                                   0 |
|  10108 | 2024-04-26 11:46:50 | 2024-04-26 11:47:05 | 00:00:15                      |                                       15069000 |                   0 |                                                                   0 |
|  10107 | 2024-04-26 11:45:41 | 2024-04-26 11:45:56 | 00:00:14                      |                                       14780000 |                   0 |                                                                   0 |
|   7455 | 2024-04-26 11:13:17 | 2024-04-26 11:13:17 | 00:00:00                      |                                          21000 |                   0 |                                                                   1 |
|   5105 | 2024-04-26 11:12:58 | 2024-04-26 11:12:58 | 00:00:00                      |                                          21000 |                   0 |                                                                   1 |
|   6653 | 2024-04-26 11:13:10 | 2024-04-26 11:13:10 | 00:00:00                      |                                          20000 |                   0 |                                                                   1 |
|   8723 | 2024-04-26 11:13:27 | 2024-04-26 11:13:27 | 00:00:00                      |                                          16000 |                   0 |                                                                   1 |
|   5877 | 2024-04-26 11:13:04 | 2024-04-26 11:13:04 | 00:00:00                      |                                          14000 |                   0 |                                                                   1 |
|   9125 | 2024-04-26 11:13:29 | 2024-04-26 11:13:29 | 00:00:00                      |                                          14000 |                   0 |                                                                   1 |
|   9959 | 2024-04-26 11:13:35 | 2024-04-26 11:13:35 | 00:00:00                      |                                          14000 |                   0 |                                                                   1 |
|   6767 | 2024-04-26 11:13:11 | 2024-04-26 11:13:11 | 00:00:00                      |                                          14000 |                   0 |                                                                   1 |
|   2851 | 2024-04-26 11:12:34 | 2024-04-26 11:12:34 | 00:00:00                      |                                          14000 |                   0 |                                                                   1 |
|   7679 | 2024-04-26 11:13:19 | 2024-04-26 11:13:19 | 00:00:00                      |                                          13000 |                   0 |                                                                   1 |
|   3953 | 2024-04-26 11:12:41 | 2024-04-26 11:12:41 | 00:00:00                      |                                          13000 |                   0 |                                                                   1 |
|   6267 | 2024-04-26 11:13:07 | 2024-04-26 11:13:07 | 00:00:00                      |                                          13000 |                   0 |                                                                   1 |
|   3579 | 2024-04-26 11:12:38 | 2024-04-26 11:12:38 | 00:00:00                      |                                          13000 |                   0 |                                                                   1 |
|   2455 | 2024-04-26 11:12:32 | 2024-04-26 11:12:32 | 00:00:00                      |                                          13000 |                   0 |                                                                   1 |
|   6149 | 2024-04-26 11:13:06 | 2024-04-26 11:13:06 | 00:00:00                      |                                          13000 |                   0 |                                                                   1 |
|   5491 | 2024-04-26 11:13:01 | 2024-04-26 11:13:01 | 00:00:00                      |                                          13000 |                   0 |                                                                   1 |
|   2863 | 2024-04-26 11:12:34 | 2024-04-26 11:12:34 | 00:00:00                      |                                          13000 |                   0 |                                                                   1 |
+--------+---------------------+---------------------+-------------------------------+------------------------------------------------+---------------------+---------------------------------------------------------------------+
20 rows in set (0.12 sec)

After:

mysql> SELECT JOB_ID,START_TIME,END_TIME,TIMEDIFF(END_TIME,START_TIME),TIMESTAMPDIFF(MICROSECOND,START_TIME,END_TIME),END_TIME=START_TIME,CONVERT(END_TIME USING utf8mb4) = CONVERT(START_TIME USING utf8mb4) FROM information_schema.DDL_JOBS ORDER BY TIMEDIFF(END_TIME,START_TIME) DESC LIMIT 20;
+--------+----------------------------+----------------------------+-------------------------------+------------------------------------------------+---------------------+---------------------------------------------------------------------+
| JOB_ID | START_TIME                 | END_TIME                   | TIMEDIFF(END_TIME,START_TIME) | TIMESTAMPDIFF(MICROSECOND,START_TIME,END_TIME) | END_TIME=START_TIME | CONVERT(END_TIME USING utf8mb4) = CONVERT(START_TIME USING utf8mb4) |
+--------+----------------------------+----------------------------+-------------------------------+------------------------------------------------+---------------------+---------------------------------------------------------------------+
|  10106 | 2024-04-26 11:20:02.297000 | 2024-04-26 11:20:17.399000 | 00:00:15                      |                                       15102000 |                   0 |                                                                   0 |
|  10108 | 2024-04-26 11:46:50.526000 | 2024-04-26 11:47:05.595000 | 00:00:15                      |                                       15069000 |                   0 |                                                                   0 |
|  10107 | 2024-04-26 11:45:41.498000 | 2024-04-26 11:45:56.278000 | 00:00:14                      |                                       14780000 |                   0 |                                                                   0 |
|   7455 | 2024-04-26 11:13:17.589000 | 2024-04-26 11:13:17.610000 | 00:00:00                      |                                          21000 |                   0 |                                                                   0 |
|   5105 | 2024-04-26 11:12:58.775000 | 2024-04-26 11:12:58.796000 | 00:00:00                      |                                          21000 |                   0 |                                                                   0 |
|   6653 | 2024-04-26 11:13:10.826000 | 2024-04-26 11:13:10.846000 | 00:00:00                      |                                          20000 |                   0 |                                                                   0 |
|   8723 | 2024-04-26 11:13:27.420000 | 2024-04-26 11:13:27.436000 | 00:00:00                      |                                          16000 |                   0 |                                                                   0 |
|   5877 | 2024-04-26 11:13:04.647000 | 2024-04-26 11:13:04.661000 | 00:00:00                      |                                          14000 |                   0 |                                                                   0 |
|   9125 | 2024-04-26 11:13:29.984000 | 2024-04-26 11:13:29.998000 | 00:00:00                      |                                          14000 |                   0 |                                                                   0 |
|   9959 | 2024-04-26 11:13:35.580000 | 2024-04-26 11:13:35.594000 | 00:00:00                      |                                          14000 |                   0 |                                                                   0 |
|   6767 | 2024-04-26 11:13:11.778000 | 2024-04-26 11:13:11.792000 | 00:00:00                      |                                          14000 |                   0 |                                                                   0 |
|   2851 | 2024-04-26 11:12:34.460000 | 2024-04-26 11:12:34.474000 | 00:00:00                      |                                          14000 |                   0 |                                                                   0 |
|   7679 | 2024-04-26 11:13:19.542000 | 2024-04-26 11:13:19.555000 | 00:00:00                      |                                          13000 |                   0 |                                                                   0 |
|   3953 | 2024-04-26 11:12:41.114000 | 2024-04-26 11:12:41.127000 | 00:00:00                      |                                          13000 |                   0 |                                                                   0 |
|   6267 | 2024-04-26 11:13:07.737000 | 2024-04-26 11:13:07.750000 | 00:00:00                      |                                          13000 |                   0 |                                                                   0 |
|   3579 | 2024-04-26 11:12:38.800000 | 2024-04-26 11:12:38.813000 | 00:00:00                      |                                          13000 |                   0 |                                                                   0 |
|   2455 | 2024-04-26 11:12:32.181000 | 2024-04-26 11:12:32.194000 | 00:00:00                      |                                          13000 |                   0 |                                                                   0 |
|   6149 | 2024-04-26 11:13:06.778000 | 2024-04-26 11:13:06.791000 | 00:00:00                      |                                          13000 |                   0 |                                                                   0 |
|   5491 | 2024-04-26 11:13:01.644000 | 2024-04-26 11:13:01.657000 | 00:00:00                      |                                          13000 |                   0 |                                                                   0 |
|   2863 | 2024-04-26 11:12:34.545000 | 2024-04-26 11:12:34.558000 | 00:00:00                      |                                          13000 |                   0 |                                                                   0 |
+--------+----------------------------+----------------------------+-------------------------------+------------------------------------------------+---------------------+---------------------------------------------------------------------+
20 rows in set (0.14 sec)

@dveeden dveeden requested a review from mjonss April 26, 2024 10:52
@ti-chi-bot ti-chi-bot bot added release-note size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Apr 26, 2024
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Hi @dveeden. Thanks for your PR.

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dveeden commented Apr 26, 2024

/ok-to-test

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dveeden commented Apr 26, 2024

The only thing I don't understand is why TIMEDIFF(END_TIME,START_TIME) isn't returning microsecond info

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LGTM.
Are there any risk of breaking existing usage of this table?

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[APPROVALNOTIFIER] This PR is NOT APPROVED

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ti-chi-bot bot commented Apr 26, 2024

[LGTM Timeline notifier]

Timeline:

  • 2024-04-26 11:14:35.736683931 +0000 UTC m=+10229.493819513: ☑️ agreed by mjonss.

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mjonss commented Apr 26, 2024

Also is it possible to create either test for this, maybe an integration test and using --replace_regex to make sure there are a microsecond part?

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dveeden commented Apr 26, 2024

LGTM.
Are there any risk of breaking existing usage of this table?

Not that I'm aware

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codecov bot commented Apr 26, 2024 •
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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.6821%. Comparing base (10971ea) to head (1f79bbf).
Report is 28 commits behind head on master.

Additional details and impacted files 
@@                Coverage Diff                @@
##             master     #52930         +/-   ##
=================================================
- Coverage   74.3919%   55.6821%   -18.7099%     
=================================================
  Files          1482       1596        +114     
  Lines        355545     605038     +249493     
=================================================
+ Hits         264497     336898      +72401     
- Misses        71785     244956     +173171     
- Partials      19263      23184       +3921
Flag Coverage Δ
integration 37.5645% <100.0000%> (?)
unit 71.2285% <100.0000%> (-1.9185%) ⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components Coverage Δ
dumpling 53.9957% <ø> (-2.3014%) ⬇️
parser ∅ <ø> (∅)
br 49.9819% <ø> (+7.2343%) ⬆️

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dveeden commented Apr 30, 2024

/retest

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dveeden commented Apr 30, 2024

/retest

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