Revive read/write engine lock to guard operations against resets#126311

Merged

tlrx merged 26 commits intoelastic:mainfrom

tlrx:ES-10826-the-return

Apr 10, 2025

Commits on Apr 8, 2025

Revert "Revert "Use read/write engine lock to guard operations against resets (#124635)" (#125915)"
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add EngineReadWriteLock
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acquire read lock before refresh
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Use lock for resets only
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Add test for deadlock
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sometimes
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doc about non-blocking refreshes and reset
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assertNoEngineResetLock
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readLock and comment
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move EngineResetLock
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[CI] Auto commit changes from spotless

elasticsearchmachine
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== false
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remove more readlocks
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remove some assertNoEngineResetLock
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also read lock on flushes
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feedback
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[CI] Auto commit changes from spotless
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assert
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Commits on Apr 9, 2025