Sentinel: debugging message removed.

[redis.git] / 00-RELEASENOTES

diff --git a/00-RELEASENOTES b/00-RELEASENOTES
index 6227632a96aeac63c67adb10497a6d4efa6ed205..12f1e3d1862da41183cb109e97be2f3d42bfe86c 100644 (file)
--- a/00-RELEASENOTES
+++ b/00-RELEASENOTES
@@ -1,39 +1,95 @@
 Redis 2.6 release notes
 Redis 2.6 release notes

+=======================

 
 

-Migrating from 2.4 to 2.6
-=========================
-
-Redis 2.4 is mostly a strict subset of 2.6. However there are a few things
-that you should be aware of:
-
-* You can't use .rdb and AOF files generated with 2.6 into a 2.4 instance.
-* 2.4 slaves can be attached to 2.6 masters, but not the contrary, and only
-  for the time needed to perform the version upgrade.
-
-There are also a few API differences, that are unlikely to cause problems,
-but it is better to keep them in mind:
-
-* SORT now will refuse to sort in numerical mode elements that can't be parsed
-  as numbers.
-* EXPIREs now all have millisecond resolution (but this is very unlikely to
-  break code that was not conceived exploting the previous resolution error
-  in some way.)
-* INFO output is a bit different now, and contains empty lines and comments
-  starting with '#'. All the major clients should be already fixed to work
-  with the new INFO format.
-* Slaves are only read-only by default (but you can change this easily
-  setting the "slave-read-only" configuration option to "no" editing your
-  redis.conf or using CONFIG SET.
+** IMPORTANT ** Check the 'Migrating from 2.4 to 2.6' section at the end of
+                this file for information about what changed between 2.4 and
+                2.6 and how this may affect your application.

 
 

-Also the following redis.conf and CONFIG GET / SET parameters changed name:
+--------------------------------------------------------------------------------
+Upgrade urgency levels:

 
 

-    * hash-max-zipmap-entries, now replaced by hash-max-ziplist-entries
-    * hash-max-zipmap-value, now replaced by hash-max-ziplist-value
-    * glueoutputbuf option was now completely removed (was deprecated)
+LOW:      No need to upgrade unless there are new features you want to use.
+MODERATE: Program an upgrade of the server, but it's not urgent.
+HIGH:     There is a critical bug that may affect a subset of users. Upgrade!
+CRITICAL: There is a critical bug affecting MOST USERS. Upgrade ASAP.
+--------------------------------------------------------------------------------

 
 

----------
-CHANGELOG
----------
+---[ Redis 2.5.13 (2.6 Release Candidate 7) ]
+
+UPGRADE URGENCY: HIGH
+
+* [BUGFIX]   Theoretical bug in ziplist fixed.
+* [BUGFIX]   Better out of memory handling (Log produced in log file).
+* [BUGFIX]   Incrementally flush RDB file on slave side while performing the
+             first synchronization with the master. This makes Redis less
+             blocking in environments where disk I/O is slow.
+* [BUGFIX]   Don't crash with Lua's redis.call() without arguments.
+* [BUGFIX]   Don't crash after a big number of Lua calls on 32 bit systems
+             because of a failed assertion.
+* [BUGFIX]   Fix SORT behaviour when called from scripting.
+* [BUGFIX]   Adjust slave PING period accordingly to REDIS_HZ define.
+* [BUGFIX]   BITCOUNT: fix crash on overflowing arguments.
+* [BUGFIX]   Return an error when SELECT argument is not an integer.
+* [BUGFIX]   Blocking operations on lists were completely reimplemented for
+             correctness. Now blocking list ops and pushes originated from
+             Lua scripts will play well together and will be replicated
+             and transmitted to the AOF correctly.
+* [IMPROVED] Send async PING before starting replication to avoid blocking if
+             master allows us to connect but it is actually not able to reply.
+* [IMPROVED] Support slave-priority for Redis Sentinel.
+* [IMPROVED] Hiredis library updated.
+
+---[ Redis 2.5.12 (2.6 Release Candidate 6) ]
+
+UPGRADE URGENCY: MODERATE.
+
+* [BUGFIX]   Fixed a timing attack on AUTH (Issue #560).
+* [BUGFIX]   Don't assume that "char" is signed.
+* [BUGFIX]   Check that we have connection before enabling pipe mode.
+* [BUGFIX]   Use the optimized version of the function to convert a double to
+             its string representation. Compilation was disabled because of
+             a typo in the #if statement.
+* [IMPROVED} REPLCONF internal command introduced, now INFO shows slaves with
+             correct port numbers. This makes 2.5.12 Redis Sentinel compatible.
+* [IMPROVED] Truncate short write from the AOF for a cleaner restart. On short
+             writes (for instance out of space) Redis will now try to remove
+             the half-written data so that the next restart will work without
+             the need for the "redis-check-aof" utility.
+* [IMPROVED] New in INFO: aof_last_bgrewrite_status
+* [IMPROVED] Allow Pub/Sub in contexts where other commands are blocked.
+* [BUGFIX]   mark fd as writable when EPOLLERR or EPOLLHUP is returned by
+             epoll_wait.
+
+---[ Redis 2.5.11 (2.6 Release Candidate 5) ]
+
+UPGRADE URGENCY: HIGH.
+
+* [BUGFIX]   Fixed Hash corruption when loading an RDB file generated by
+             previous versions of Redis that encoded hashes using
+             a different ziplist encoding format for small integers.
+             All the fileds that are integers in the range 0-255 may not
+             be recognized, or duplicated un updates, causing a crash
+             when the ziplist is converted to a real hash. (Issue #547).
+* [BUGFIX]   Fixed the count of memory used by output buffers in the
+             setDeferredMultiBulkLength() function.
+
+---[ Redis 2.5.10 (2.6 Release Candidate 4) ]
+
+UPGRADE URGENCY: HIGH.
+
+* [BUGFIX]   Allow PREFIX to be overwritten on "make install".
+* [BUGFIX]   Run the test with just one client if the computer is slow.
+* [BUGFIX]   Event port support in our event driven libray.
+* [BUGFIX]   Jemalloc updated to 3.0.0. This fixes a possibly AOF rewrite issue.
+             See https://github.com/antirez/redis/issues/504 for info.
+* [BUGFIX]   Fixed issue #516: ZINTERSTORE / ZUNIONSTORE with mixed sets/zsets.
+* [BUGFIX]   Set fd to writable when poll(2) detects POLLERR or POLLHUP event.
+* [BUGFIX]   Fixed RESTORE hash failure (Issue #532).
+* [IMPROVED] Allow an AOF rewrite buffer > 2GB (Related to issue #504).
+* [IMPROVED] Server cron function frequency is now configurable (REDIS_HZ).
+* [IMPROVED] Better, less blocking expired keys collection algorithm.
+* [FEATURE]  New commands: BITOP and BITCOUNT.
+* [FEATURE]  redis-cli --pipe for mass import.

 
 What's new in Redis 2.5.9 (aka 2.6 Release Candidate 3)
 =======================================================
 
 What's new in Redis 2.5.9 (aka 2.6 Release Candidate 3)
 =======================================================


@@ -48,7 +104,7 @@ UPGRADE URGENCY: critical, upgrade ASAP.
            (and possibly other BSD-based systems) the slave would block on
            replication to send the SYNC command when the master was not
            available. This is fixed now, but was not affecting Linux installs.
            (and possibly other BSD-based systems) the slave would block on
            replication to send the SYNC command when the master was not
            available. This is fixed now, but was not affecting Linux installs.

-* Now when slave-serve-stake-data is set to yes and the master is down, instead
+* Now when slave-serve-stale-data is set to yes and the master is down, instead

   of reporting a generic error Redis replies with -MASTERDOWN.
 
 What's new in Redis 2.5.8 (aka 2.6 Release Candidate 2)
   of reporting a generic error Redis replies with -MASTERDOWN.
 
 What's new in Redis 2.5.8 (aka 2.6 Release Candidate 2)


@@ -82,8 +138,12 @@ An overview of new features and changes in Redis 2.6.x
 * Better memory usage for "small" lists, ziplists and hashes when fields or
   values contain small integers.
 * Read only slaves.
 * Better memory usage for "small" lists, ziplists and hashes when fields or
   values contain small integers.
 * Read only slaves.

+* New bit opeations: BITCOUNT and BITOP commands.

 * Clients max output buffer soft and hard limits. You can specifiy different
   limits for different classes of clients (normal,pubsub,slave).
 * Clients max output buffer soft and hard limits. You can specifiy different
   limits for different classes of clients (normal,pubsub,slave).

+* More incremental (less blocking) expired keys collection algorithm, in
+  practical terms this means that Redis is more responsive when a very
+  big number of keys expire about at the same time.

 * AOF is now able to rewrite aggregate data types using variadic commands,
   often producing an AOF that is faster to save, load, and is smaller in size.
 * Every redis.conf directive is now accepted as a command line option for the
 * AOF is now able to rewrite aggregate data types using variadic commands,
   often producing an AOF that is faster to save, load, and is smaller in size.
 * Every redis.conf directive is now accepted as a command line option for the


@@ -115,6 +175,46 @@ An overview of new features and changes in Redis 2.6.x
 * Better support for big endian and *BSD systems.
 * Build system improved.
 
 * Better support for big endian and *BSD systems.
 * Build system improved.
 

+Migrating from 2.4 to 2.6
+=========================
+
+Redis 2.4 is mostly a strict subset of 2.6. However there are a few things
+that you should be aware of:
+
+* You can't use .rdb and AOF files generated with 2.6 into a 2.4 instance.
+* 2.6 slaves can be attached to 2.4 masters, but not the contrary, and only
+  for the time needed to perform the version upgrade.
+
+There are also a few API differences, that are unlikely to cause problems,
+but it is better to keep them in mind:
+
+* SORT now will refuse to sort in numerical mode elements that can't be parsed
+  as numbers.
+* EXPIREs now all have millisecond resolution (but this is very unlikely to
+  break code that was not conceived exploting the previous resolution error
+  in some way.)
+* INFO output is a bit different now, and contains empty lines and comments
+  starting with '#'. All the major clients should be already fixed to work
+  with the new INFO format.
+* Slaves are only read-only by default (but you can change this easily
+  setting the "slave-read-only" configuration option to "no" editing your
+  redis.conf or using CONFIG SET.
+
+The following INFO fields were renamed for consistency:
+
+     changes_since_last_save -> rdb_changes_since_last_save
+     bgsave_in_progress -> rdb_bgsave_in_progress
+     last_save_time -> rdb_last_save_time
+     last_bgsave_status -> rdb_last_bgsave_status
+     bgrewriteaof_in_progress -> aof_rewrite_in_progress
+     bgrewriteaof_scheduled -> aof_rewrite_scheduled
+
+The following redis.conf and CONFIG GET / SET parameters changed:
+
+    * hash-max-zipmap-entries, now replaced by hash-max-ziplist-entries
+    * hash-max-zipmap-value, now replaced by hash-max-ziplist-value
+    * glueoutputbuf option was now completely removed (was deprecated)
+

 --------------------------------------------------------------------------------
 
 Credits: Where not specified the implementation and design are done by
 --------------------------------------------------------------------------------
 
 Credits: Where not specified the implementation and design are done by