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parseMapPayload could lose an entry when it crossed a chunk boundary, lose deferred data after repeated crossings, or repeat stale data when a chunk exactly matched the buffer size. Build chunks with one buffer and flush it before adding an entry that would exceed the limit. This preserves every entry in its original order while keeping the existing AddMapPayloadVersioned size behavior.
Add ReplaceMapPayload to prepare a new map version, clear it, add the desired entries in order, and commit only after every step succeeds. Require HAProxy 2.4 or newer instead of falling back to a non-atomic update. An empty entry list commits an empty map.
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Summary
Adds
ReplaceMapPayloadto atomically replace all entries in a runtime map. Also fixes payload chunking that could drop or repeat entries across buffer boundaries.Details
AddMapPayloadVersionedbehavior, while ensuring its large-payload atomic path preserves every entry.