server.client_pause_end_time is uninitialized, or actually 0, at startup,
which means this method would think the timeout was reached
and go look for paused clients.
This causes no harm since unpauseClients will not find any paused clients.
server.client_pause_end_time is uninitialized, or actually 0, at startup,
which means this method would think the timeout was reached
and go look for paused clients.
This causes no harm since unpauseClients will not find any paused clients.
The code used to decide on the next time to wake on a timer with
microsecond accuracy, but when deciding to go to sleep it used
milliseconds accuracy (with truncation), this means that it would wake
up too early, see that there's no timer to process, and go to sleep
again for 0ms again and again until the right microsecond arrived.
i.e. a timer for 100ms, would sleep for 99ms, but then do a busy loop
through the kernel in the last millisecond, triggering many calls to
beforeSleep.
The fix is to change all the logic in ae.c to work with microseconds,
which is good since most of the ae backends support micro (or even nano)
seconds. however the epoll backend, doesn't support micro, so to avoid
this problem it needs to round upwards, rather than truncate.
Issue created by the monotonic timer PR #7644 (redis 6.2)
Before that, all the timers in ae.c were in milliseconds (using
mstime), so when it requested the backend to sleep till the next timer
event, it would have worked ok.
The code used to decide on the next time to wake on a timer with
microsecond accuracy, but when deciding to go to sleep it used
milliseconds accuracy (with truncation), this means that it would wake
up too early, see that there's no timer to process, and go to sleep
again for 0ms again and again until the right microsecond arrived.
i.e. a timer for 100ms, would sleep for 99ms, but then do a busy loop
through the kernel in the last millisecond, triggering many calls to
beforeSleep.
The fix is to change all the logic in ae.c to work with microseconds,
which is good since most of the ae backends support micro (or even nano)
seconds. however the epoll backend, doesn't support micro, so to avoid
this problem it needs to round upwards, rather than truncate.
Issue created by the monotonic timer PR #7644 (redis 6.2)
Before that, all the timers in ae.c were in milliseconds (using
mstime), so when it requested the backend to sleep till the next timer
event, it would have worked ok.
Disable replica migration to avoid a race condition where the
migrated-from node turns into a replica.
Long term, this test should probably be improved to handle multiple
slots and accept such auto migrations but this is a quick fix to
stabilize the CI without completely dropping this test.
Disable replica migration to avoid a race condition where the
migrated-from node turns into a replica.
Long term, this test should probably be improved to handle multiple
slots and accept such auto migrations but this is a quick fix to
stabilize the CI without completely dropping this test.
The bio aof fsync fd may be closed by main thread (AOFRW done handler)
and even possibly reused for another socket, pipe, or file.
This can can an EBADF or EINVAL fsync error, which will lead to -MISCONF errors failing all writes.
We just ignore these errno because aof fsync did not really fail.
We handle errno when fsyncing aof in bio, so we could know the real reason
when users get -MISCONF Errors writing to the AOF file error
Issue created with #8419
The bio aof fsync fd may be closed by main thread (AOFRW done handler)
and even possibly reused for another socket, pipe, or file.
This can can an EBADF or EINVAL fsync error, which will lead to -MISCONF errors failing all writes.
We just ignore these errno because aof fsync did not really fail.
We handle errno when fsyncing aof in bio, so we could know the real reason
when users get -MISCONF Errors writing to the AOF file error
Issue created with #8419
