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Release 7.0.2
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The SET and BITFIELD command were added `get_keys_function` in #10148, causing
them to be wrongly marked movablekeys in `populateCommandMovableKeys`.
This was an unintended side effect introduced in #10148 (7.0 RC1)
which could cause some clients an extra round trip for these commands in cluster mode.
Since we define movablekeys as a way to determine if the legacy range [first, last, step]
doesn't find all keys, then we need a completely different approach.
The right approach should be to check if the legacy range covers all key-specs,
and if none of the key-specs have the INCOMPLETE flag.
This way, we don't need to look at getkeys_proc of VARIABLE_FLAG at all.
Probably with the exception of modules, who may still not be using key-specs.
In this PR, we removed `populateCommandMovableKeys` and put its logic in
`populateCommandLegacyRangeSpec`.
In order to properly serve both old and new modules, we must probably keep relying
CMD_MODULE_GETKEYS, but do that only for modules that don't declare key-specs.
For ones that do, we need to take the same approach we take with native redis commands.
This approach was proposed by Oran. Fixes #10833
Co-authored-by: Oran Agra <oran@redislabs.com>
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When `/proc/sys/vm/overcommit_memory` is inaccessible, fp is NULL.
`checkOvercommit` will return -1 without setting err_msg, and then
the err_msg is used to print the log, crash the server.
Set the err_msg variables to Null when declaring it, seems safer.
And the overcommit_memory error log will print two "WARNING",
like `WARNING WARNING overcommit_memory is set to 0!`, this PR
also removes the second WARNING in `checkOvercommit`.
Reported in #10846. Fixes #10846. Introduced in #10636 (7.0.1)
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The test calls `ldd` on `redis-server` in order to find out whether the binary
was linked against `libmusl`; However, `ldd` returns a value different from `0`
when statically linking the binaries agains libc-musl, because `redis-server` is
not a dynamic executable (as given by the exception thrown by the failing test),
and `make test` terminates with an error::
$ ldd src/redis-server
not a dynamic executable
$ echo $?
1
This commit fixes the test by ignoring such failures.
Co-authored-by: Yossi Gottlieb <yossigo@gmail.com>
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some small documentation fixes.
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"." (#10832)
There is a little regex that wraps up all the free-floating functions in the doc-block
e.g. malloc() with backticks.
in case of `redis.call()`, it used to wrap just `call()` in backticks.
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Release 7.0.1
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This change fixes failing `integration/logging.tcl` test in Gentoo with
musl libc, where `ldd` returns
```
libc.so => /lib/ld-musl-x86_64.so.1 (0x7f9d5f171000)
```
unlike Alpine's
```
libc.musl-x86_64.so.1 => /lib/ld-musl-x86_64.so.1 (0x7f82cfa16000)
```
The solution is to extend matching pattern introduced in #8532.
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Currently, we only increment stat_rdb_saves in rdbSaveBackground,
we should also increment it in the SAVE command.
We concluded there's no need to increment when:
1. saving a base file for an AOF
2. when saving an empty rdb file to delete an old one
3. when saving to sockets (not creating a persistence / snapshot file)
The stat counter was introduced in #10178
* fix a wrong comment in startSaving
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Correcting the introduction version of the command `BITFIELD_RO`
Command added by commit: b3e4abf06e
Add history info of the `FULL` modifier in `XINFO STREAM`
Modifier was added by commit: 1e2aee3919
(Includes output from `./utils/generate-command-code.py`)
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Currently generate-command.help.rb dose not handle the
multiple_token flag, handle this flag in this PR.
The format is the same as redis-cli rendering.
```diff
- bitfield_ro key GET encoding offset [encoding offset ...]
+ bitfield_ro key GET encoding offset [GET encoding offset ...]
```
Re run generate-command-code.py which was forget in #10820.
Also change the flag value from string to bool, like "true" to true
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Current documentation only states a single GET token is needed which is not true. Marking the command with multiple_token.
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before releasing 7.0.1
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Trying to avoid people opening crash report issues about module crashes and ARM QEMU bugs.
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instantaneous_output_repl_kbps. (#10810)
A supplement to https://github.com/redis/redis/pull/10062
Split `instantaneous_repl_total_kbps` to `instantaneous_input_repl_kbps` and `instantaneous_output_repl_kbps`.
## Work:
This PR:
- delete 1 info field:
- `instantaneous_repl_total_kbps`
- add 2 info fields:
- `instantaneous_input_repl_kbps / instantaneous_output_repl_kbps`
## Result:
- master
```
total_net_input_bytes:26633673
total_net_output_bytes:21716596
total_net_repl_input_bytes:0
total_net_repl_output_bytes:18433052
instantaneous_input_kbps:0.02
instantaneous_output_kbps:0.00
instantaneous_input_repl_kbps:0.00
instantaneous_output_repl_kbps:0.00
```
- slave
```
total_net_input_bytes:18433212
total_net_output_bytes:94790
total_net_repl_input_bytes:18433052
total_net_repl_output_bytes:0
instantaneous_input_kbps:0.00
instantaneous_output_kbps:0.05
instantaneous_input_repl_kbps:0.00
instantaneous_output_repl_kbps:0.00
```
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On line 4068, redis has a logical nodeIsSlave(myself) on the outer if layer,
which you can delete without having to repeat the decision
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* Update time independent string compare to use hash length
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Redis 7 adds some new alias config like `hash-max-listpack-entries` alias `hash-max-ziplist-entries`.
If a config file contains both real name and alias like this:
```
hash-max-listpack-entries 20
hash-max-ziplist-entries 20
```
after set `hash-max-listpack-entries` to 100 and `config rewrite`, the config file becomes to:
```
hash-max-listpack-entries 100
hash-max-ziplist-entries 20
```
we can see that the alias config is not modified, and users will get wrong config after restart.
6.0 and 6.2 doesn't have this bug, since they only have the `slave` word alias.
Co-authored-by: Oran Agra <oran@redislabs.com>
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Skip the print on AOF_NOT_EXIST status.
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inserting comments around module and acl configs (#10761)
A regression from #10285 (redis 7.0).
CONFIG REWRITE would put lines with: `include`, `rename-command`,
`user`, `loadmodule`, and any module specific config in a comment.
For ACL `user`, `loadmodule` and module specific configs would be
re-inserted at the end (instead of updating existing lines), so the only
implication is a messy config file full of comments.
But for `rename-command` and `include`, the implication would be that
they're now missing, so a server restart would lose them.
Co-authored-by: Oran Agra <oran@redislabs.com>
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Apparently, GCC 11.2.0 has a new fancy warning for misleading indentations.
It prints a warning when BRET(b) is on the same line as the loop.
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The important part is that read-only scripts (not just EVAL_RO
and FCALL_RO, but also ones with `no-writes` executed by normal EVAL or
FCALL), will now be permitted to run during CLIENT PAUSE WRITE (unlike
before where only the _RO commands would be processed).
Other than that, some errors like OOM, READONLY, MASTERDOWN are now
handled by processCommand, rather than the command itself affects the
error string (and even error code in some cases), and command stats.
Besides that, now the `may-replicate` commands, PFCOUNT and PUBLISH, will
be considered `write` commands in scripts and will be blocked in all
read-only scripts just like other write commands.
They'll also be blocked in EVAL_RO (i.e. even for scripts without the
`no-writes` shebang flag.
This commit also hides the `may_replicate` flag from the COMMAND command
output. this is a **breaking change**.
background about may_replicate:
We don't want to expose a no-may-replicate flag or alike to scripts, since we
consider the may-replicate thing an internal concern of redis, that we may
some day get rid of.
In fact, the may-replicate flag was initially introduced to flag EVAL: since
we didn't know what it's gonna do ahead of execution, before function-flags
existed). PUBLISH and PFCOUNT, both of which because they have side effects
which may some day be fixed differently.
code changes:
The changes in eval.c are mostly code re-ordering:
- evalCalcFunctionName is extracted out of evalGenericCommand
- evalExtractShebangFlags is extracted luaCreateFunction
- evalGetCommandFlags is new code
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bug, and new RM_Call checks. (#10786)
* Fix broken protocol when redis can't persist to RDB (general commands, not
modules), excessive newline. regression of #10372 (7.0 RC3)
* Fix broken protocol when Redis can't persist to AOF (modules and
scripts), missing newline.
* Fix bug in OOM check of EVAL scripts called from RM_Call.
set the cached OOM state for scripts before executing module commands too,
so that it can serve scripts that are executed by modules.
i.e. in the past EVAL executed by RM_Call could have either falsely
fail or falsely succeeded because of a wrong cached OOM state flag.
* Fix bugs with RM_Yield:
1. SHUTDOWN should only accept the NOSAVE mode
2. Avoid eviction during yield command processing.
3. Avoid processing master client commands while yielding from another client
* Add new two more checks to RM_Call script mode.
1. READONLY You can't write against a read only replica
2. MASTERDOWN Link with MASTER is down and `replica-serve-stale-data` is set to `no`
* Add new RM_Call flag to let redis automatically refuse `deny-oom` commands
while over the memory limit.
* Add tests to cover various errors from Scripts, Modules, Modules
calling scripts, and Modules calling commands in script mode.
Add tests:
* Looks like the MISCONF error was completely uncovered by the tests,
add tests for it, including from scripts, and modules
* Add tests for NOREPLICAS from scripts
* Add tests for the various errors in module RM_Call, including RM_Call that
calls EVAL, and RM_call in "eval mode". that includes:
NOREPLICAS, READONLY, MASTERDOWN, MISCONF
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(#10697)
Move the client flags to a more cache friendly position within the client struct
we regain the lost 2% of CPU cycles since v6.2 ( from 630532.57 to 647449.80 ops/sec ).
These are due to higher rate of calls to getClientType due to changes in #9166 and #10020
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This allows the module to know the usable size of an allocation
it made, rather than the consumed size.
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since the sharded pubsub is different with pubsub, it's better to give users a hint to make it more clear.
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The amount of `server.stat_net_output_bytes/server.stat_net_input_bytes`
is actually the sum of replication flow and users' data flow.
It may cause confusions like this:
"Why does my server get such a large output_bytes while I am doing nothing? ".
After discussions and revisions, now here is the change about what this
PR brings (final version before merge):
- 2 server variables to count the network bytes during replication,
including fullsync and propagate bytes.
- `server.stat_net_repl_output_bytes`/`server.stat_net_repl_input_bytes`
- 3 info fields to print the input and output of repl bytes and instantaneous
value of total repl bytes.
- `total_net_repl_input_bytes` / `total_net_repl_output_bytes`
- `instantaneous_repl_total_kbps`
- 1 new API `rioCheckType()` to check the type of rio. So we can use this
to distinguish between diskless and diskbased replication
- 2 new counting items to keep network statistics consistent between master
and slave
- rdb portion during diskless replica. in `rdbLoadProgressCallback()`
- first line of the full sync payload. in `readSyncBulkPayload()`
Co-authored-by: Oran Agra <oran@redislabs.com>
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To easily distinguish between sharded channel message and a global
channel message, introducing `smessage` (instead of `message`) as
message bulk for sharded channel publish message.
This is gonna be a breaking change in 7.0.1!
Background:
Sharded pubsub introduced in redis 7.0, but after the release we quickly
realized that the fact that it's problematic that the client can't distinguish
between normal (global) pubsub messages and sharded ones.
This is important because the same connection can subscribe to both,
but messages sent to one pubsub system are not propagated to the
other (they're completely separate), so if one connection is used to
subscribe to both, we need to assist the client library to know which
message it got so it can forward it to the correct callback.
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When I read the source codes, I have no idea where the option "age" come from.
Co-authored-by: Ubuntu <lucas.guang.yang1@huawei.com>
Co-authored-by: guybe7 <guy.benoish@redislabs.com>
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* Add readonly flag to EVAL_RO, EVALSHA_RO and FCALL_RO
* Require users to explicitly declare @scripting to get access to lua scripting.
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This bug resulted in wrong memory usage statistics after a redis function library is removed.
Signed-off-by: skygragon <skygragon@gmail.com>
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C_OK (#10790)
The ret value should be AOF_OK instead of C_OK.
AOF_OK and C_OK are both 0, so this is just a cleanup.
Also updated some outdated comments.
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fix typo ` the largest possible limit is 16k` -> ` the largest possible limit is 64k`.
The count field is 16 bits so the largest possible limit is 64k(2**16).
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There is a timing issue reported in test-sanitizer-address (gcc):
```
Sentinels (re)connection following SENTINEL SET mymaster auth-pass:
FAILED: Expected to be disconnected from master due to wrong password
```
The reason we reach it, is because the test is fast enough to modify
auth-pass and test sentinel connection status with the server,
before its scheduled operation got the chance to update connection
status with the server.
We need to wait for `sentinelTimer` to kick in, and then update the
connection status. Replace condition with wait_for_condition on the check.
Fix just like #10480 did
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When `zrangestore` is called container destination object is created.
Before this PR we used to create a listpack based object even if `zset-max-ziplist-entries`
or equivalent`zset-max-listpack-entries` was set to 0.
This triggered immediate conversion of the listpack into a skiplist in `zrangestore`, which hits
an assertion resulting in an engine crash.
Added a TCL test that reproduces this issue.
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There are some commands that has the wrong key specs.
This PR adds a key-spec related check in generate-command-code.py.
Check if the index is valid, or if there is an unused index.
The check result will look like:
```
[root]# python utils/generate-command-code.py
Processing json files...
Linking container command to subcommands...
Checking all commands...
command: RESTORE_ASKING may have unused key_spec
command: RENAME may have unused key_spec
command: PFDEBUG may have unused key_spec
command: WATCH key_specs missing flags
command: LCS arg: key2 key_spec_index error
command: RENAMENX may have unused key_spec
Error: There are errors in the commands check, please check the above logs.
```
The following commands have been fixed according to the check results:
- RESTORE ASKING: add missing arguments section (and history section)
- RENAME: newkey's key_spec_index should be 1
- PFDEBUG: add missing arguments (and change the arity from -3 to 3)
- WATCH: add missing key_specs flags: RO, like EXIST (it allow you to know the key exists, or is modified, but doesn't "leak" the data)
- LCS: key2 key_spec_index error, there is only one key-spec
- RENAMENX: newkey's key_spec_index should be 1
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Clearly more than one flag exists, also fixed some typos.
Fixes #10776
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instead of printing a log when a folder or a manifest is missing (level reduced), we print:
total time it took to load all the aof files
when creating a new base or incr file
starting to write to an existing incr file on startup
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Added the function name/script sha to the script timeout log message.
This info existed in the log in redis 6.2, was removed in the function refactoring
since was initially complicated, but later made simple.
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The regex support was added in:
* https://github.com/redis/redis/pull/9352
* https://github.com/redis/redis/pull/9555
* https://github.com/redis/redis/pull/10212
These commits break backword compatiblity with older versions.
This fix keeps the test suite infra compatible with old versions by
default. However, if you want regex, the string must start with `/`
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This bug was introduced in #9484 (7.0.0).
It result that BZMPOP blocked on non-key arguments.
Like `bzmpop 0 1 myzset min count 10`, this command will additionally
block in these keys (except for the first and the last argument) and can return their values:
- 0: timeout value
- 1: numkeys value
- min: min/max token
- count: count token
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This PR does 2 main things:
1) Add warning for suspected slow system clocksource setting. This is Linux specific.
2) Add a `--check-system` argument to redis which runs all system checks and prints a report.
## System checks
Add a command line option `--check-system` which runs all known system checks and provides
a report to stdout of which systems checks have failed with details on how to reconfigure the
system for optimized redis performance.
The `--system-check` mode exists with an appropriate error code after running all the checks.
## Slow clocksource details
We check the system's clocksource performance by running `clock_gettime()` in a loop and then
checking how much time was spent in a system call (via `getrusage()`). If we spend more than
10% of the time in the kernel then we print a warning. I verified that using the slow clock sources:
`acpi_pm` (~90% in the kernel on my laptop) and `xen` (~30% in the kernel on an ec2 `m4.large`)
we get this warning.
The check runs 5 system ticks so we can detect time spent in kernel at 20% jumps (0%,20%,40%...).
Anything more accurate will require the test to run longer. Typically 5 ticks are 50ms. This means
running the test on startup will delay startup by 50ms. To avoid this we make sure the test is only
executed in the `--check-system` mode.
For a quick startup check, we specifically warn if the we see the system is using the `xen` clocksource
which we know has bad performance and isn't recommended (at least on ec2). In such a case the
user should manually rung redis with `--check-system` to force the slower clocksource test described
above.
## Other changes in the PR
* All the system checks are now implemented as functions in _syscheck.c_.
They are implemented using a standard interface (see details in _syscheck.c_).
To do this I moved the checking functions `linuxOvercommitMemoryValue()`,
`THPIsEnabled()`, `linuxMadvFreeForkBugCheck()` out of _server.c_ and _latency.c_
and into the new _syscheck.c_. When moving these functions I made sure they don't
depend on other functionality provided in _server.c_ and made them use a standard
"check functions" interface. Specifically:
* I removed all logging out of `linuxMadvFreeForkBugCheck()`. In case there's some
unexpected error during the check aborts as before, but without any logging.
It returns an error code 0 meaning the check didn't not complete.
* All these functions now return 1 on success, -1 on failure, 0 in case the check itself
cannot be completed.
* The `linuxMadvFreeForkBugCheck()` function now internally calls `exit()` and not
`exitFromChild()` because the latter is only available in _server.c_ and I wanted to
remove that dependency. This isn't an because we don't need to worry about the
child process created by the test doing anything related to the rdb/aof files which
is why `exitFromChild()` was created.
* This also fixes parsing of other /proc/\<pid\>/stat fields to correctly handle spaces
in the process name and be more robust in general. Not that before this fix the rss
info in `INFO memory` was corrupt in case of spaces in the process name. To
recreate just rename `redis-server` to `redis server`, start it, and run `INFO memory`.
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(#10699)
Scripts that have the `no-writes` flag, cannot execute write commands,
and since all `deny-oom` commands are write commands, we now act
as if the `allow-oom` flag is implicitly set for scripts that set the `no-writes` flag.
this also implicitly means that the EVAL*_RO and FCALL_RO commands can
never fails with OOM error.
Note about a bug that's no longer relevant:
There was an issue with EVAL*_RO using shebang not being blocked correctly
in OOM state:
When an EVAL script declares a shebang, it was by default not allowed to run in
OOM state.
but this depends on a flag that is updated before the command is executed, which
was not updated in case of the `_RO` variants.
the result is that if the previous cached state was outdated (either true or false),
the script will either unjustly fail with OOM, or unjustly allowed to run despite
the OOM state.
It doesn't affect scripts without a shebang since these depend on the actual
commands they run, and since these are only read commands, they don't care
for that cached oom state flag.
it did affect scripts with shebang and no allow-oom flag, bug after the change in
this PR, scripts that are run with eval_ro would implicitly have that flag so again
the cached state doesn't matter.
p.s. this isn't a breaking change since all it does is allow scripts to run when they
should / could rather than blocking them.
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