- 02 5月, 2013 3 次提交
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由 antirez 提交于
This is just to make the code exactly like the above instance used for requirepass. No actual change nor the original code violated the Redis coding style.
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由 Michel Martens 提交于
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由 charsyam 提交于
There was a race condition in the AOF rewrite code that, with bad enough timing, could cause a volatile key just about to expire to be turned into a non-volatile key. The bug was never reported to cause actualy issues, but was found analytically by an user in the Redis mailing list: https://groups.google.com/forum/?fromgroups=#!topic/redis-db/Kvh2FAGK4Uk This commit fixes issue #1079.
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- 30 4月, 2013 2 次提交
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由 antirez 提交于
Tilt mode was too aggressive (not processing INFO output), this resulted in a few problems: 1) Redirections were not followed when in tilt mode. This opened a window to misinform clients about the current master when a Sentinel was in tilt mode and a fail over happened during the time it was not able to update the state. 2) It was possible for a Sentinel exiting tilt mode to detect a false fail over start, if a slave rebooted with a wrong configuration about at the same time. This used to happen since in tilt mode we lose the information that the runid changed (reboot). Now instead the Sentinel in tilt mode will still remove the instance from the list of slaves if it changes state AND runid at the same time. Both are edge conditions but the changes should overall improve the reliability of Sentinel.
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由 antirez 提交于
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- 29 4月, 2013 1 次提交
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由 antirez 提交于
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- 26 4月, 2013 1 次提交
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由 antirez 提交于
We used to always turn a master into a slave if the DEMOTE flag was set, as this was a resurrecting master instance. However the following race condition is possible for a Sentinel that got partitioned or internal issues (tilt mode), and was not able to refresh the state in the meantime: 1) Sentinel X is running, master is instance "A". 3) "A" fails, sentinels will promote slave "B" as master. 2) Sentinel X goes down because of a network partition. 4) "A" returns available, Sentinels will demote it as a slave. 5) "B" fails, other Sentinels will promote slave "A" as master. 6) At this point Sentinel X comes back. When "X" comes back he thinks that: "B" is the master. "A" is the slave to demote. We want to avoid that Sentinel "X" will demote "A" into a slave. We also want that Sentinel "X" will detect that the conditions changed and will reconfigure itself to monitor the right master. There are two main ways for the Sentinel to reconfigure itself after this event: 1) If "B" is reachable and already configured as a slave by other sentinels, "X" will perform a redirection to "A". 2) If there are not the conditions to demote "A", the fact that "A" reports to be a master will trigger a failover detection in "X", that will end into a reconfiguraiton to monitor "A". However if the Sentinel was not reachable, its state may not be updated, so in case it titled, or was partiitoned from the master instance of the slave to demote, the new implementation waits some time (enough to guarantee we can detect the new INFO, and new DOWN conditions). If after some time still there are not the right condiitons to demote the instance, the DEMOTE flag is cleared.
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- 24 4月, 2013 4 次提交
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由 antirez 提交于
Sentinel redirected to the master if the instance changed runid or it was the first time we got INFO, and a role change was detected from master to slave. While this is a good idea in case of slave->master, since otherwise we could detect a failover without good reasons just after a reboot with a slave with a wrong configuration, in the case of master->slave transition is much better to always perform the redirection for the following reasons: 1) A Sentinel may go down for some time. When it is back online there is no other way to understand there was a failover. 2) Pointing clients to a slave seems to be always the wrong thing to do. 3) There is no good rationale about handling things differently once an instance is rebooted (runid change) in that case.
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由 antirez 提交于
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由 antirez 提交于
This prevents the kernel from putting too much stuff in the output buffers, doing too heavy I/O all at once. So the goal of this commit is to split the disk pressure due to the AOF rewrite process into smaller spikes. Please see issue #1019 for more information.
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由 antirez 提交于
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- 23 4月, 2013 1 次提交
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由 antirez 提交于
When the test is executed using the root account, setting the permission to 222 does not work as expected, as root can read files with 222 permission. Now we skip the test if root is detected. This fixes issue #1034 and the duplicated #1040 issue. Thanks to Jan-Erik Rediger (@badboy on Github) for finding a way to reproduce the issue.
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- 22 4月, 2013 1 次提交
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由 antirez 提交于
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- 19 4月, 2013 3 次提交
- 18 4月, 2013 1 次提交
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由 antirez 提交于
Redis gitignore was too aggressive since simply broken. Jemalloc gitignore was too agressive because it is conceived to just keep the files that allow to generate all the rest in development environments (so for instance the "configure" file is excluded).
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- 11 4月, 2013 2 次提交
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由 antirez 提交于
Previously redis-cli never tried to raise an error when an unrecognized switch was encountered, as everything after the initial options is to be transmitted to the server. However this is too liberal, as there are no commands starting with "-". So the new behavior is to produce an error if there is an unrecognized switch starting with "-". This should not break past redis-cli usages but should prevent broken options to be silently discarded. As far the first token not starting with "-" is encountered, all the rest is considered to be part of the command, so you cna still use strings starting with "-" as values, like in: redis-cli --port 6380 set foo --my-value
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由 antirez 提交于
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- 09 4月, 2013 5 次提交
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由 antirez 提交于
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由 antirez 提交于
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由 antirez 提交于
We used to copy this value into the server.cluster structure, however this was not necessary. The reason why we don't directly use server.cluster->node_timeout is that things that can be configured via redis.conf need to be directly available in the server structure as server.cluster is allocated later only if needed in order to reduce the memory footprint of non-cluster instances.
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由 antirez 提交于
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由 antirez 提交于
In commit d728ec6d it was introduced the concept of sending a ping to every node not receiving a ping since node_timeout/2 seconds. However the code was located in a place that was not executed because of a previous conditional causing the loop to re-iterate. This caused false positives in nodes availability detection. The current code is still not perfect as a node may be detected to be in PFAIL state even if it does not reply for just node_timeout/2 seconds that is not correct. There is a plan to improve this code ASAP.
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- 04 4月, 2013 5 次提交
- 03 4月, 2013 1 次提交
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由 antirez 提交于
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- 02 4月, 2013 3 次提交
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由 antirez 提交于
When a BGSAVE fails, Redis used to flood itself trying to BGSAVE at every next cron call, that is either 10 or 100 times per second depending on configuration and server version. This commit does not allow a new automatic BGSAVE attempt to be performed before a few seconds delay (currently 5). This avoids both the auto-flood problem and filling the disk with logs at a serious rate. The five seconds limit, considering a log entry of 200 bytes, will use less than 4 MB of disk space per day that is reasonable, the sysadmin should notice before of catastrofic events especially since by default Redis will stop serving write queries after the first failed BGSAVE. This fixes issue #849
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由 antirez 提交于
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由 Salvatore Sanfilippo 提交于
Build improvements
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- 29 3月, 2013 1 次提交
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由 charsyam 提交于
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- 28 3月, 2013 6 次提交