Concurrent Apply can lead to child node applies before parent, so
undo/redo operations will perform. This leads to performance degradation
in case of tree with many sublevels.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
Since Go 1.22 a "for" statement with a "range" clause is able
to iterate through integer values from zero to an upper limit.
gopatch script:
@@
var i, e expression
@@
-for i := 0; i <= e - 1; i++ {
+for i := range e {
...
}
@@
var i, e expression
@@
-for i := 0; i <= e; i++ {
+for i := range e + 1 {
...
}
@@
var i, e expression
@@
-for i := 0; i < e; i++ {
+for i := range e {
...
}
Signed-off-by: Ekaterina Lebedeva <ekaterina.lebedeva@yadro.com>
Initially it was there to check whether an update is being initiated by
a proper node. It is now obsolete for 2 reasons:
1. Background synchronization fetches all operations from a single node.
2. There are a lot more problems with trust in the tree service, it is
only used in controlled environments.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
Currently, under high load clients are blocked on channel send
and the number of goroutines can increase indefinitely.
In this commit we drop replication messages if send/recv queue is full
and rely on a background synchronization.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
Before this commit the replication channel was quickly filled under
heavy load. This lead to the continuously increasing latency for all
write operations. Now it looks better.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
