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Converge hash validation for adding and removing
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Redis-cli 6.0.1 `--cluster-yes` doesn't work (fix #7246)
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This make it so that all prompts for all redis-cli --cluster commands are automatically answered with a yes.
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fix valgrind test failure in replication test
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in b4416280c i added more keys to that test to make it run longer
but in valgrind this now means the test times out, give valgrind more
time.
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add regression test for the race in #7205
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with the original version of 6.0.0, this test detects an excessive full
sync.
with the fix in 1a7cd2c0e, this test detects memory corruption,
especially when using libc allocator with or without valgrind.
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This was broken in 1a7cd2c: we identified a crash in the CI, what
was happening before the fix should be like that:
1. The client gets in the async free list.
2. However freeClient() gets called again against the same client
which is a master.
3. The client arrived in freeClient() with the CLOSE_ASAP flag set.
4. The master gets cached, but NOT removed from the CLOSE_ASAP linked
list.
5. The master client that was cached was immediately removed since it
was still in the list.
6. Redis accessed a freed cached master.
This is how the crash looked like:
=== REDIS BUG REPORT START: Cut & paste starting from here ===
1092:S 16 May 2020 11:44:09.731 # Redis 999.999.999 crashed by signal: 11
1092:S 16 May 2020 11:44:09.731 # Crashed running the instruction at: 0x447e18
1092:S 16 May 2020 11:44:09.731 # Accessing address: 0xffffffffffffffff
1092:S 16 May 2020 11:44:09.731 # Failed assertion: (:0)
------ STACK TRACE ------
EIP:
src/redis-server 127.0.0.1:21300(readQueryFromClient+0x48)[0x447e18]
And the 0xffff address access likely comes from accessing an SDS that is
set to NULL (we go -1 offset to read the header).
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TLS: Fix test failures on recent Debian/Ubuntu.
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Seems like on some systems choosing specific TLS v1/v1.1 versions no
longer works as expected. Test is reduced for v1.2 now which is still
good enough to test the mechansim, and matters most anyway.
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TLS: Add crypto locks for older OpenSSL support.
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This is really required only for older OpenSSL versions.
Also, at the moment Redis does not use OpenSSL from multiple threads so
this will only be useful if modules end up doing that.
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NetBSD build update.
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This platform supports CPU affinity (but not OpenBSD).
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Added a refcount on timer events to prevent deletion of recursive timer events
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The context is issue #7205: since the introduction of threaded I/O we close
clients asynchronously by default from readQueryFromClient(). So we
should no longer prevent the caching of the master client, to later
PSYNC incrementally, if such flags are set. However we also don't want
the master client to be cached with such flags (would be closed
immediately after being restored). And yet we want a way to understand
if a master was closed because of a protocol error, and in that case
prevent the caching.
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Related to #7234.
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This bug was introduced by a recent change in which readQueryFromClient
is using freeClientAsync, and despite the fact that now
freeClientsInAsyncFreeQueue is in beforeSleep, that's not enough since
it's not called during loading in processEventsWhileBlocked.
furthermore, afterSleep was called in that case but beforeSleep wasn't.
This bug also caused slowness sine the level-triggered mode of epoll
kept signaling these connections as readable causing us to keep doing
connRead again and again for ll of these, which keep accumulating.
now both before and after sleep are called, but not all of their actions
are performed during loading, some are only reserved for the main loop.
fixes issue #7215
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A fix for #7249.
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fix unstable replication test
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this test which has coverage for varoius flows of diskless master was
failing randomly from time to time.
the failure was:
[err]: diskless all replicas drop during rdb pipe in tests/integration/replication.tcl
log message of '*Diskless rdb transfer, last replica dropped, killing fork child*' not found
what seemed to have happened is that the master didn't detect that all
replicas dropped by the time the replication ended, it thought that one
replica is still connected.
now the test takes a few seconds longer but it seems stable.
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Redis Benchmark: Fix coredump because of double free
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We want to send pings and pongs at specific intervals, since our packets
also contain information about the configuration of the cluster and are
used for gossip. However since our cluster bus is used in a mixed way
for data (such as Pub/Sub or modules cluster messages) and metadata,
sometimes a very busy channel may delay the reception of pong packets.
So after discussing it in #7216, this commit introduces a new field that
is not exposed in the cluster, is only an internal information about
the last time we received any data from a given node: we use this field
in order to avoid detecting failures, claiming data reception of new
data from the node is a proof of liveness.
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Remove unreachable branch.
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add jemalloc-bg-thread config in redis conf
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add include guard for lolwut.h
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redis-cli cluster reshard does not work with ACL (AUTH2 MIGRATE args un-implemented)
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