[ML] Fix solution for preventing race conditions between timeout and completion #10740
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…completion - solution was added in apache#4455
merlimat
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May 28, 2021
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May 29, 2021
…completion (apache#10740) - solution was added in apache#4455
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May 31, 2021
…completion (apache#10740) - solution was added in apache#4455
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Jun 7, 2021
…completion (apache#10740) - solution was added in apache#4455 (cherry picked from commit 4372b49)
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Jun 23, 2021
…completion (apache#10740) - solution was added in apache#4455
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…completion (apache#10740) - solution was added in apache#4455
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Motivation
It seem that the solution for preventing race conditions between timeout and completion doesn't work.
The repro case in #10738 can reproduce this problem.
Modifications
This small modification:
ADD_OP_COUNT_UPDATER.compareAndSet(this, this.addOpCount, -1)->ADD_OP_COUNT_UPDATER.compareAndSet(this, addOpCount, -1).It seems that passing
this.addOpCountto the second argument wouldn't make sense. The method also contains aaddOpCountvariable which is unused. Therefore it seems that the actual intention has been to use theaddOpCountlocal variable instead of theaddOpCountfield.Additional context
Original solution was added in #4455.