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If a configuration reload is issued as the server is being shutdown,
we could get 2 different panics. One due to JetStream if an account
is JetStream enabled, and one due to the send to a go channel that
has been closed.
```
panic: send on closed channel [recovered]
panic: send on closed channel
goroutine 440 [running]:
testing.tRunner.func1.2({0x1038d58e0, 0x1039e1270})
/usr/local/go/src/testing/testing.go:1545 +0x274
testing.tRunner.func1()
/usr/local/go/src/testing/testing.go:1548 +0x448
panic({0x1038d58e0?, 0x1039e1270?})
/usr/local/go/src/runtime/panic.go:920 +0x26c
github.com/nats-io/nats-server/v2/server.(*Server).reloadAuthorization(0xc00024fb00)
/Users/ik/dev/go/src/github.com/nats-io/nats-server/server/reload.go:1998 +0x788
github.com/nats-io/nats-server/v2/server.(*Server).applyOptions(0xc00024fb00, 0xc00021dc00, {0xc00038e4e0, 0x2, 0xc00021dc28?})
/Users/ik/dev/go/src/github.com/nats-io/nats-server/server/reload.go:1746 +0x2b8
github.com/nats-io/nats-server/v2/server.(*Server).reloadOptions(0xc000293500?, 0xc000118a80, 0xc000293500)
/Users/ik/dev/go/src/github.com/nats-io/nats-server/server/reload.go:1121 +0x178
github.com/nats-io/nats-server/v2/server.(*Server).ReloadOptions(0xc00024fb00, 0xc000293500)
/Users/ik/dev/go/src/github.com/nats-io/nats-server/server/reload.go:1060 +0x368
github.com/nats-io/nats-server/v2/server.(*Server).Reload(0xc00024fb00)
/Users/ik/dev/go/src/github.com/nats-io/nats-server/server/reload.go:995 +0x104
```
and
```
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x2 addr=0x0 pc=0x10077b224]
goroutine 8 [running]:
testing.tRunner.func1.2({0x101351640, 0x101b7d2a0})
/usr/local/go/src/testing/testing.go:1545 +0x274
testing.tRunner.func1()
/usr/local/go/src/testing/testing.go:1548 +0x448
panic({0x101351640?, 0x101b7d2a0?})
/usr/local/go/src/runtime/panic.go:920 +0x26c
github.com/nats-io/nats-server/v2/server.(*Account).EnableJetStream(0xc00020fb80, 0xc000220240)
/Users/ivan/dev/go/src/github.com/nats-io/nats-server/server/jetstream.go:1045 +0xa4
github.com/nats-io/nats-server/v2/server.(*Server).configJetStream(0xc000226d80, 0xc00020fb80)
/Users/ivan/dev/go/src/github.com/nats-io/nats-server/server/jetstream.go:707 +0xdc
github.com/nats-io/nats-server/v2/server.(*Server).configAllJetStreamAccounts(0xc000226d80)
/Users/ivan/dev/go/src/github.com/nats-io/nats-server/server/jetstream.go:768 +0x2b0
github.com/nats-io/nats-server/v2/server.(*Server).enableJetStreamAccounts(0xc000226d80?)
/Users/ivan/dev/go/src/github.com/nats-io/nats-server/server/jetstream.go:637 +0x128
github.com/nats-io/nats-server/v2/server.(*Server).reloadAuthorization(0xc000226d80)
/Users/ivan/dev/go/src/github.com/nats-io/nats-server/server/reload.go:2039 +0x93c
github.com/nats-io/nats-server/v2/server.(*Server).applyOptions(0xc000226d80, 0xc000171c50, {0xc000074600, 0x2, 0xc000171c78?})
/Users/ivan/dev/go/src/github.com/nats-io/nats-server/server/reload.go:1746 +0x2b8
github.com/nats-io/nats-server/v2/server.(*Server).reloadOptions(0xc000276000?, 0xc0000a6000, 0xc000276000)
/Users/ivan/dev/go/src/github.com/nats-io/nats-server/server/reload.go:1121 +0x178
github.com/nats-io/nats-server/v2/server.(*Server).ReloadOptions(0xc000226d80, 0xc000276000)
/Users/ivan/dev/go/src/github.com/nats-io/nats-server/server/reload.go:1060 +0x368
github.com/nats-io/nats-server/v2/server.(*Server).Reload(0xc000226d80)
/Users/ivan/dev/go/src/github.com/nats-io/nats-server/server/reload.go:995 +0x104
```
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
Tests
Tests that run on Travis have been split into jobs that run in their own VM in parallel. This reduces the overall running time but also is allowing recycling of a job when we get a flapper as opposed to have to recycle the whole test suite.
JetStream Tests
For JetStream tests, we need to observe a naming convention so that no tests are omitted when running on Travis.
The script runTestsOnTravis.sh will run a given job based on the definition found in ".travis.yml".
As for the naming convention:
- All JetStream tests name should start with
TestJetStream - Cluster tests should go into
jetstream_cluster_test.goand start withTestJetStreamCluster - Super-cluster tests should go into
jetstream_super_cluster_test.goand start withTestJetStreamSuperCluster
Not following this convention means that some tests may not be executed on Travis.