ebfb440629
Ref: https://github.com/redis/redis/pull/12760 ### Description #### Fixes compatibilty of PlaceholderKV cluster (7.2 - extensions enabled by default) with older Redis cluster (< 7.0 - extensions not handled) . With some of the extensions enabled by default in 7.2 version, new nodes running 7.2 and above start sending out larger clusterbus message payload including the ping extensions. This caused an incompatibility with node running engine versions < 7.0. Old nodes (< 7.0) would receive the payload from new nodes (> 7.2) would observe a payload length (totlen) > (estlen) and would perform an early exit and won't process the message. This fix introduces a flag `extensions_supported` on the clusterMsg indicating the sender node can handle extensions parsing. Once, a receiver nodes receives a message with this flag set to 1, it would update clusterNode new field extensions_supported and start sending out extensions if it has any. This PR also introduces a DEBUG sub command to enable/disable cluster message extensions `process-clustermsg-extensions` feature. Note: A successful `PING`/`PONG` is required as a sender for a given node to be marked as `extensions_supported` and then extensions message will be sent to it. This could cause a slight delay in receiving the extensions message(s). ### Testing TCL test verifying the cluster state is healthy irrespective of enabling/disabling cluster message extensions feature. --------- Signed-off-by: Harkrishn Patro <harkrisp@amazon.com> |
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| assets | ||
| cluster | ||
| helpers | ||
| integration | ||
| modules | ||
| sentinel | ||
| support | ||
| tmp | ||
| unit | ||
| instances.tcl | ||
| README.md | ||
| test_helper.tcl | ||
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