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[C++] Simplify concurrency in as-of-join node #36092
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### What changes are included in this PR? The key hasher invalidation and memo-store time updating are moved to the processing thread. ### Are these changes tested? Yes, by existing tests. ### Are there any user-facing changes? No. * Closes: #36092 Authored-by: Yaron Gvili <rtpsw@hotmail.com> Signed-off-by: Li Jin <ice.xelloss@gmail.com>
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Describe the enhancement requested
Currently, as-of-join node has internal invocations that require thread-safe synchronization but can be simplified to not require this:
Both of these can be moved to the processing thread, instead of invoked from the input-receiving thread.
Component(s)
C++
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