17b7b8a733
In #11012, we changed the way command durations were computed to handle the same command being executed multiple times. In #11970, we added an assert if the duration is not properly reset, potentially indicating that a call to report statistics was missed. I found an edge case where this happens - easily reproduced by blocking a client on `XGROUPREAD` and migrating the stream's slot. This causes the engine to process the `XGROUPREAD` command twice: 1. First time, we are blocked on the stream, so we wait for unblock to come back to it a second time. In most cases, when we come back to process the command second time after unblock, we process the command normally, which includes recording the duration and then resetting it. 2. After unblocking we come back to process the command, and this is where we hit the edge case - at this point, we had already migrated the slot to another node, so we return a `MOVED` response. But when we do that, we don’t reset the duration field. Fix: also reset the duration when returning a `MOVED` response. I think this is right, because the client should redirect the command to the right node, which in turn will calculate the execution duration. Also wrote a test which reproduces this, it fails without the fix and passes with it. --------- Signed-off-by: Nitai Caro <caronita@amazon.com> Co-authored-by: Nitai Caro <caronita@amazon.com> Signed-off-by: Ping Xie <pingxie@google.com>
Redis Test Suite
The normal execution mode of the test suite involves starting and manipulating
local redis-server instances, inspecting process state, log files, etc.
The test suite also supports execution against an external server, which is
enabled using the --host and --port parameters. When executing against an
external server, tests tagged external:skip are skipped.
There are additional runtime options that can further adjust the test suite to match different external server configurations:
| Option | Impact |
|---|---|
--singledb |
Only use database 0, don't assume others are supported. |
--ignore-encoding |
Skip all checks for specific encoding. |
--ignore-digest |
Skip key value digest validations. |
--cluster-mode |
Run in strict Redis Cluster compatibility mode. |
--large-memory |
Enables tests that consume more than 100mb |
Tags
Tags are applied to tests to classify them according to the subsystem they test, but also to indicate compatibility with different run modes and required capabilities.
Tags can be applied in different context levels:
start_servercontexttagscontext that bundles several tests together- A single test context.
The following compatibility and capability tags are currently used:
| Tag | Indicates |
|---|---|
external:skip |
Not compatible with external servers. |
cluster:skip |
Not compatible with --cluster-mode. |
large-memory |
Test that requires more than 100mb |
tls:skip |
Not compatible with --tls. |
needs:repl |
Uses replication and needs to be able to SYNC from server. |
needs:debug |
Uses the DEBUG command or other debugging focused commands (like OBJECT REFCOUNT). |
needs:pfdebug |
Uses the PFDEBUG command. |
needs:config-maxmemory |
Uses CONFIG SET to manipulate memory limit, eviction policies, etc. |
needs:config-resetstat |
Uses CONFIG RESETSTAT to reset statistics. |
needs:reset |
Uses RESET to reset client connections. |
needs:save |
Uses SAVE or BGSAVE to create an RDB file. |
When using an external server (--host and --port), filtering using the
external:skip tags is done automatically.
When using --cluster-mode, filtering using the cluster:skip tag is done
automatically.
When not using --large-memory, filtering using the largemem:skip tag is done
automatically.
In addition, it is possible to specify additional configuration. For example, to
run tests on a server that does not permit SYNC use:
./runtest --host <host> --port <port> --tags -needs:repl