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THUMarkLau
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Oct 8, 2022
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THUMarkLau
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THUMarkLau
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For CrossSpaceCompactionWriter, multiple threads may write to multiple different TsFileIOWriter, if we synchronized them with a single object, it may lead to performance decrease. It's better to maintain a global array, which map sub-task-id to the writer they are using. When thread writes data, it only needs to synchronized the writer it is using.
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Description
this PR fix issue #5884