Turns out that when the fork child crashes, the crash log was deleting
the pidfile from the disk (although the parent is still running.
Now we set the pidfile of the fork process to NULL so the fork process
will never deletes it.
Normally IO threads should simply read data from the socket into the
buffer and attempt to parse it.
If a protocol error is detected, a reply is generated which may result
with installing a write handler which is not thread safe. This fix
delays that until the client is processed back in the main thread.
Fixes#8220
Normally IO threads should simply read data from the socket into the
buffer and attempt to parse it.
If a protocol error is detected, a reply is generated which may result
with installing a write handler which is not thread safe. This fix
delays that until the client is processed back in the main thread.
Fixes#8220
In the distant history there was only the read flag for commands, and whatever
command that didn't have the read flag was a write one.
Then we added the write flag, but some portions of the code still used !read
Also some commands that don't work on the keyspace at all, still have the read
flag.
Changes in this commit:
1. remove the read-only flag from TIME, ECHO, ROLE and LASTSAVE
2. EXEC command used to decides if it should propagate a MULTI by looking at
the command flags (!read & !admin).
When i was about to change it to look at the write flag instead, i realized
that this would cause it not to propagate a MULTI for PUBLISH, EVAL, and
SCRIPT, all 3 are not marked as either a read command or a write one (as
they should), but all 3 are calling forceCommandPropagation.
So instead of introducing a new flag to denote a command that "writes" but
not into the keyspace, and still needs propagation, i decided to rely on
the forceCommandPropagation, and just fix the code to propagate MULTI when
needed rather than depending on the command flags at all.
The implication of my change then is that now it won't decide to propagate
MULTI when it sees one of these: SELECT, PING, INFO, COMMAND, TIME and
other commands which are neither read nor write.
3. Changing getNodeByQuery and clusterRedirectBlockedClientIfNeeded in
cluster.c to look at !write rather than read flag.
This should have no implications, since these code paths are only reachable
for commands which access keys, and these are always marked as either read
or write.
This commit improve MULTI propagation tests, for modules and a bunch of
other special cases, all of which used to pass already before that commit.
the only one that test change that uncovered a change of behavior is the
one that DELs a non-existing key, it used to propagate an empty
multi-exec block, and no longer does.
In the distant history there was only the read flag for commands, and whatever
command that didn't have the read flag was a write one.
Then we added the write flag, but some portions of the code still used !read
Also some commands that don't work on the keyspace at all, still have the read
flag.
Changes in this commit:
1. remove the read-only flag from TIME, ECHO, ROLE and LASTSAVE
2. EXEC command used to decides if it should propagate a MULTI by looking at
the command flags (!read & !admin).
When i was about to change it to look at the write flag instead, i realized
that this would cause it not to propagate a MULTI for PUBLISH, EVAL, and
SCRIPT, all 3 are not marked as either a read command or a write one (as
they should), but all 3 are calling forceCommandPropagation.
So instead of introducing a new flag to denote a command that "writes" but
not into the keyspace, and still needs propagation, i decided to rely on
the forceCommandPropagation, and just fix the code to propagate MULTI when
needed rather than depending on the command flags at all.
The implication of my change then is that now it won't decide to propagate
MULTI when it sees one of these: SELECT, PING, INFO, COMMAND, TIME and
other commands which are neither read nor write.
3. Changing getNodeByQuery and clusterRedirectBlockedClientIfNeeded in
cluster.c to look at !write rather than read flag.
This should have no implications, since these code paths are only reachable
for commands which access keys, and these are always marked as either read
or write.
This commit improve MULTI propagation tests, for modules and a bunch of
other special cases, all of which used to pass already before that commit.
the only one that test change that uncovered a change of behavior is the
one that DELs a non-existing key, it used to propagate an empty
multi-exec block, and no longer does.
In response to large client query buffer optimization introduced in 1898e6c. The calculation of the amount of
remaining bytes we need to write to the query buffer was calculated wrong, as a result we are unnecessarily
growing the client query buffer by sdslen(c->querybuf) always. This fix corrects that behavior.
Please note the previous behavior prior to the before-mentioned change was correctly calculating the remaining
additional bytes, and this change makes that calculate to be consistent.
Useful context, the argument of size `ll` starts at qb_pos (which is now the beginning of the sds), but much of it
may have already been read from the socket, so we only need to grow the sds for the remainder of it.
In response to large client query buffer optimization introduced in 1898e6c. The calculation of the amount of
remaining bytes we need to write to the query buffer was calculated wrong, as a result we are unnecessarily
growing the client query buffer by sdslen(c->querybuf) always. This fix corrects that behavior.
Please note the previous behavior prior to the before-mentioned change was correctly calculating the remaining
additional bytes, and this change makes that calculate to be consistent.
Useful context, the argument of size `ll` starts at qb_pos (which is now the beginning of the sds), but much of it
may have already been read from the socket, so we only need to grow the sds for the remainder of it.
If we only has one node in cluster or before 8fdc857, we don't know myself ip, so we should use config.hostip for myself.
However, we should use the IP from the command response to update node->ip if it exists and is different from config.hostip
otherwise, when there's more than one node in cluster, if we use -h with virtual IP or DNS, benchmark doesn't show node real ip and port of myself even though it could get right IP and port by CLUSTER NODES command.
If we only has one node in cluster or before 8fdc857, we don't know myself ip, so we should use config.hostip for myself.
However, we should use the IP from the command response to update node->ip if it exists and is different from config.hostip
otherwise, when there's more than one node in cluster, if we use -h with virtual IP or DNS, benchmark doesn't show node real ip and port of myself even though it could get right IP and port by CLUSTER NODES command.
Fix wrong server dirty increment in
* spopWithCountCommand
* hsetCommand
* ltrimCommand
* pfaddCommand
Some didn't increment the amount of fields (just one per command).
Others had excessive increments.
Fix wrong server dirty increment in
* spopWithCountCommand
* hsetCommand
* ltrimCommand
* pfaddCommand
Some didn't increment the amount of fields (just one per command).
Others had excessive increments.
Exposes the main thread CPU info via info modules ( linux specific only )
(used_cpu_sys_main_thread and used_cpu_user_main_thread). This is important for:
- distinguish between main thread and io-threads cpu time total cpu time consumed ( check
what is the first bottleneck on the used config )
- distinguish between main thread and modules threads total cpu time consumed
Apart from it, this commit also exposes the server_time_usec within the Server section so that we can
properly differentiate consecutive collection and calculate for example the CPU% and or / cpu time vs
wall time, etc...
Exposes the main thread CPU info via info modules ( linux specific only )
(used_cpu_sys_main_thread and used_cpu_user_main_thread). This is important for:
- distinguish between main thread and io-threads cpu time total cpu time consumed ( check
what is the first bottleneck on the used config )
- distinguish between main thread and modules threads total cpu time consumed
Apart from it, this commit also exposes the server_time_usec within the Server section so that we can
properly differentiate consecutive collection and calculate for example the CPU% and or / cpu time vs
wall time, etc...
* Allow runtest-moduleapi use a different 'make', for systems where GNU Make is 'gmake'.
* Fix issue with builds on Solaris re-building everything from scratch due to CFLAGS/LDFLAGS not stored.
* Fix compile failure on Solaris due to atomicvar and a bunch of warnings.
* Fix garbled log timestamps on Solaris.
* Allow runtest-moduleapi use a different 'make', for systems where GNU Make is 'gmake'.
* Fix issue with builds on Solaris re-building everything from scratch due to CFLAGS/LDFLAGS not stored.
* Fix compile failure on Solaris due to atomicvar and a bunch of warnings.
* Fix garbled log timestamps on Solaris.
When a replica uses the diskless-load swapdb approach, it backs up the old database,
then attempts to load a new one, and in case of failure, it restores the backup.
this means that modules with global out of keyspace data, must have an option to
subscribe to events and backup/restore/discard their global data too.
When a replica uses the diskless-load swapdb approach, it backs up the old database,
then attempts to load a new one, and in case of failure, it restores the backup.
this means that modules with global out of keyspace data, must have an option to
subscribe to events and backup/restore/discard their global data too.
