LantaoJin opened a new pull request #24964: [SPARK-28160][Core] Fix a bug that TransportClient.sendRpcSync may hang forever URL: https://github.com/apache/spark/pull/24964 ## What changes were proposed in this pull request? This is very like #23590 . `ByteBuffer.allocate` may throw `OutOfMemoryError` when the response is large but no enough memory is available. However, when this happens, `TransportClient.sendRpcSync` will just hang forever if the timeout set to unlimited. This PR catches `Throwable` and uses the error to complete `SettableFuture`. ## How was this patch tested? N/A
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