Fix shutdown bugs in the RAPIDS Shuffle Manager #2950
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Signed-off-by: Alessandro Bellina <abellina@nvidia.com>
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shuffle-plugin/src/main/scala/com/nvidia/spark/rapids/shuffle/ucx/UCX.scala
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Signed-off-by: Alessandro Bellina abellina@nvidia.com
While debugging another issue, I noticed these were causing NPEs in the logs.
stop()function in the shuffle manager can be called multiple times, so I am protecting against calling.close()multiple times in things like the bounce buffers