When using subscriptions through import/exports, the server with
a leafnode connection would properly send the interest over, but
if the connection is recreated, this would not happen.
In case of JetStream where that happens under the cover, message
flow would stop after the leafnode restart because the subscriptions
would be created on recovery of the JetStream assets but *before*
the LeafNode connection could be established.
Resolves#3024Resolves#3027Resolves#3009
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
- A stream could become leader when it should not, causing
messages to be lost.
- A catchup could stall because the server sending data
could bail out of the runCatchup routine but still send
the EOF signal.
- Deadlock with monitoring of Jsz
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
Signed-off-by: Derek Collison <derek@nats.io>
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
basically a gw subject propagation issue could be hidden behind a leaf
node.
also change error text when this was the case
Signed-off-by: Matthias Hanel <mh@synadia.com>
If set, a server configured to accept leafnode connections will
reject a remote server whose version is below that value. Note
that servers prior to v2.8.0 are not sending their version
in the CONNECT protocol, which means that anything below 2.8.0
would be rejected.
Configuration example:
```
leafnodes {
port: 7422
min_version: 2.8.0
}
```
The option is a string and can have the "v" prefix:
```
min_version: "v2.9.1"
```
Note that although suffix such as `-beta` would be accepted,
only the major, minor and update are used for the version comparison.
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
This is more of a regression introduced in v2.7.3 (with PR #2848).
When the store has a list of subjects, finding the next message
to deliver would go through the subjects map and have to match
to find out if it is a subset (if the filter had a wildcard).
In situations where there were lots of subjects (for instance 1
message per subject), but the consumer did not filter on anything
specific, then this processing was becoming slow.
We now check that if the stream has a single subject (even with
wildcard) and the consumer filters on that exact subject, then
we can do a linear scan. We also do a linear scan if the number
of messages in the block is 1/2 the number of subjects in the
subjects map.
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
This needs testing because stream move adjusts the replication factor
Because adjusting replication factor and moving is illegal, this case
does not need to be tested
In order to support one off configurations, added same modification
callout to super cluster as is used with cluster
Signed-off-by: Matthias Hanel <mh@synadia.com>
This broke cross-account functionality. Ported the test from the
Go client that showed the failure after PR#2997 was merged.
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
The system will allow an update to a stream, and subsequently all attached consumers, to be placed in another cluster either directly or via tag placement.
The meta layer will scale the underlying peerset appropriately to straddle the two clusters for both the stream and consumers, taking into account the consumer type.
Control will then pass to the current leaders of the assets who will monitor the catchup status of the new peers.
(Note we can optimize this later to only traverse once across a GW for any given asset, but for now this is simpler)
Once the original leaders have determined the assets are synched it will pass leadership to a member of the new peerset.
Once the new leader has been elected, it will forward a request for the meta layer to shrink the peerset by removing the old peers.
Signed-off-by: Derek Collison <derek@nats.io>
* Add a config modification callback to createJetStreamCluster
named createJetStreamClusterAndModHook allowing the generated config to
be altered prior to server start
Signed-off-by: Matthias Hanel <mh@synadia.com>
