testing: pageworkload HeavySkewWriteRead support deleting data (#6178)

[ti-chi-bot]

This is an automated cherry-pick of #6178

What problem does this PR solve?

Issue Number: ref #6163

Problem Summary:
We do not delete the page and update existing pages in the previous pageworkload HeavySkewWriteRead. It always appends new pages. So it can not simulate the real workload of delta-tree and cost lots of disk space.

We want to use this workload for verifying the bugs reported in #6163

What is changed and how it works?

• Keep track of page id committed to PageStorage
• Update pages for about
• Remove the pages if that is unlikely to be updated or read anymore
• Previously, PSWriter::updatedRandomData generate random data for updating and reading with a bytes length range of [0, buffer_size_max]. Now it is replaced by PSWriter::getRandomData and the bytes length range is limited in [buffer_size_min, buffer_size_max]. The random data has a smaller range and more stable reading/writing speed.

The read/write performance:

W: 633028 pages, 618.1914 GB, 0.6182 GB/s
R: 31338450 pages, 30603.9551 GB, 30.6035 GB/s

W: 641408 pages, 626.3750 GB, 0.6264 GB/s
R: 30543630 pages, 29827.7637 GB, 29.8274 GB/s

W: 648852 pages, 633.6445 GB, 0.6336 GB/s
R: 29991155 pages, 29288.2373 GB, 29.2879 GB/s

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

I run the workload for 20 minutes. After the workload ends, the remaining page num is 757 rather than a large number of pages. And the disk space used for this testing is more reasonable.

> ./dbms/src/Server/tiflash pageworkload -M 16 --clean_before_run 1 --gc_interval 5 --avg_page_size 4096 --timeout 1200 &> workload.log
> cat workload.log
....
[2022/10/25 02:30:32.151 +08:00] [INFO] [PageDirectory.cpp:1461] ["After MVCC gc in memory [lowest_seq=4164205] clean [invalid_snapshot_nums=0] [invalid_page_nums=16336] [total_deref_counter=0] [all_del_entries=101659]. Still exist [snapshot_nums=0], [page_nums=757]. Longest alive snapshot: [longest_alive_snapshot_time=0] [longest_alive_snapshot_seq=0] [stale_snapshot_nums=0]"] [source=stress_test] [thread_id=23]
>  du -sh stress/HeavySkewWriteRead/*
145M    stress/HeavySkewWriteRead/blobfile_65
13M     stress/HeavySkewWriteRead/blobfile_66
3.0M    stress/HeavySkewWriteRead/blobfile_67
93M     stress/HeavySkewWriteRead/wal
>  du -sh stress/HeavySkewWriteRead/*/*
88M     stress/HeavySkewWriteRead/wal/log_280_1
2.1M    stress/HeavySkewWriteRead/wal/log_281_0
2.1M    stress/HeavySkewWriteRead/wal/log_282_0
944K    stress/HeavySkewWriteRead/wal/log_283_0

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

None

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[ti-chi-bot]

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[JaySon-Huang]

no plan for 6.3.1