* tsdb/agent: Fix deadlock from simultaneous GC and write
This commit fixes a potential deadlock where storing in-memory series
references could deadlock with a WAL GC cycle.
Signed-off-by: Robert Fratto <robertfratto@gmail.com>
* add missing license header
Signed-off-by: Robert Fratto <robertfratto@gmail.com>
* order local imports
Signed-off-by: Robert Fratto <robertfratto@gmail.com>
* align deadlock testing with discovery/manager_test.go method
Also prevents GCs from running concurrently, which could also cause a
deadlock (even though it's currently impossible for two GCs to run
concurrently).
Signed-off-by: Robert Fratto <robertfratto@gmail.com>
Robert Fratto