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raft/doc: add notice about thread safety of messages

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Fixes #4285
This commit is contained in:
Sam Rijs 2016-01-27 20:18:19 +11:00
parent 14255854d8
commit be21d90108
1 changed files with 4 additions and 0 deletions
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4
raft/doc.go
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@ -81,6 +81,10 @@ no messages be sent until after the latest HardState has been persisted to disk,
and all Entries written by any previous Ready batch (Messages may be sent while
entries from the same batch are being persisted). If any Message has type MsgSnap,
call Node.ReportSnapshot() after it has been sent (these messages may be large).
Note: Marshalling messages is not thread-safe; it is important that you
make sure that no new entries are persisted while marshalling.
The easiest way to achieve this is to serialise the messages directly inside
your main raft loop.
3. Apply Snapshot (if any) and CommittedEntries to the state machine.
If any committed Entry has Type EntryConfChange, call Node.ApplyConfChange()