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hyperxpro
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…2176) Motivation NettyConnectListener.onSuccess NPEs on timeoutsHolder.setResolvedRemoteAddress(...) when a request timeout fires concurrently with a successful connect: abort() calls cancelTimeouts() (nulls the holder) before setting isDone, and per JMM the IO thread can observe holder==null while isDone==0. PR #2127 only guarded the remoteAddress parameter, not the holder. Modification - Add null guard on timeoutsHolder in onSuccess — close the channel and bail out if the holder was nulled out concurrently. - Broaden futureIsAlreadyCancelled → futureIsAlreadyCompleted (isCancelled() → isDone()) so aborted futures don't slip past the early-out (abort()/done() set isDone, not isCancelled). - Release the partition-key lock on both early-exit paths. - Add NettyConnectListenerTest reproducing the exact NPE from the bug report. Fixes #2172 Co-authored-by: Ubuntu <ubuntu@ip-172-31-9-101.ap-south-1.compute.internal>
hyperxpro
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May 12, 2026
…2176) Motivation NettyConnectListener.onSuccess NPEs on timeoutsHolder.setResolvedRemoteAddress(...) when a request timeout fires concurrently with a successful connect: abort() calls cancelTimeouts() (nulls the holder) before setting isDone, and per JMM the IO thread can observe holder==null while isDone==0. PR #2127 only guarded the remoteAddress parameter, not the holder. Modification - Add null guard on timeoutsHolder in onSuccess — close the channel and bail out if the holder was nulled out concurrently. - Broaden futureIsAlreadyCancelled → futureIsAlreadyCompleted (isCancelled() → isDone()) so aborted futures don't slip past the early-out (abort()/done() set isDone, not isCancelled). - Release the partition-key lock on both early-exit paths. - Add NettyConnectListenerTest reproducing the exact NPE from the bug report. Fixes #2172
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Fixes a NullPointerException triggered when timeout logging tries to append a null
remoteAddressFixes #2124