app/vlstorage/netinsert: drain buffered data on graceful shutdown ins…#1572
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1 issue found across 5 files
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…tead of dropping it vlinsert dropped in-flight buffered log blocks whenever a pod terminated (autoscaling scale-in or rolling restarts): the shutdown flush reused the already-canceled stopCh context, so requests failed immediately with "context canceled" and the data was dropped. Thread an explicit context through the send path so the shutdown flush uses a fresh, bounded context. Buffered data is now drained to storage nodes on shutdown, bounded by the new -insert.drainTimeout flag (default 10s).
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Hi, thanks for looking at this. Meanwhile we are trying to mitigate this with a prestop sleep and short http.connTimeout on vlinsert to close clients keep-alive connections before the sleep ends. |
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…ad of the shutdown context The final flush during graceful shutdown reused the already-canceled shutdown context, so the last buffered data block failed instantly with "context canceled" and was dropped. Send every data block with its own timeout instead, consistent with -remoteWrite.sendTimeout in vlagent.
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All reported issues were addressed across 5 files (changes from recent commits).
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*Note: after changing the original direction of this PR to sending timeout, it seems to also incidentally fix #1512. Assigned to owner of #1512. |
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All reported issues were addressed across 4 files (changes from recent commits).
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# Conflicts: # docs/victorialogs/CHANGELOG.md
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Thanks @github-vincent-miszczak! After an internal discussion, we settled on a configurable |
Signed-off-by: Cuong Le <cuongleqq@gmail.com>
…insert.drainTimeout on shutdown
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…tead of dropping it
vlinsert dropped in-flight buffered log blocks whenever a pod terminated (autoscaling scale-in or rolling restarts): the shutdown flush reused the already-canceled stopCh context, so requests failed immediately with "context canceled" and the data was dropped.
Thread an explicit context through the send path so the shutdown flush uses a fresh, bounded context. Buffered data is now drained to storage nodes on shutdown, bounded by the new -insert.drainTimeout flag (default 10s).