Fix data race in join when Join::cancel() is called

[windtalker]

What problem does this PR solve?

Issue Number: ref #6528

Problem Summary:
There are two kinds of data race

• When Join::cancel() is called when some threads are wait on Join::waitUntilAllBuildFinished, the waiting threads will be waken up, and begin reading from hash table while some build threads are still inserting data into the same hash table
• When a right outer join spill is triggered, and Join::cancel() is called when some threads are wait on Join::waitUntilAllBuildFinished, the waiting threads will be waken up, and call Join::finishOneNonJoin at the end, and inside Join::finishOneNonJoin, it will clear the hash map, at the same time, it is possible that other threads are still accessing that hash map.

What is changed and how it works?

1. Only clear hash map if there is no active build/probe threads
2. For Join Probe, return empty block if there are still active build threads
3. For NonJoinedBlockInputStream, return empty block if there are still active build/probe threads
4. rename Join::cancel to Join::wakeUpAllWaitingThreads

Check List

Tests

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

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

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• SeaRise
• yibin87

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[yibin87]

LGTM

[SeaRise]

Others LGTM

[windtalker]

/merge

[ti-chi-bot]

@windtalker: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: b9ed8ad

[ti-chi-bot]

@windtalker: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

trigger some heavy tests which will not run always when PR updated.

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

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[windtalker]

/run-integration-test