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Brooks Walker
Brooks Walker

Percona Server For MySQL 5.6.41-84.1 Is Now Available


The libperconaserverclient20 package contains the client shared library. The 18.1 is a reference to the version of the shared library. The version is incremented when there is a ABI change that requires software using the client library to be recompiled or its source code modified.




Percona Server for MySQL 5.6.41-84.1 Is Now Available



This will install all the packages from the bundle. Another option is to download/specify only the packages you need for running Percona Server for MySQL installation (libperconaserverclient20_5.7.10-3-1.jessie_amd64.deb, percona-server-client-5.7_5.7.10-3-1.jessie_amd64.deb, percona-server-common-5.7_5.7.10-3-1.jessie_amd64.deb, and percona-server-server-5.7_5.7.10-3-1.jessie_amd64.deb. Optionally you can install percona-server-tokudb-5.7_5.7.10-3-1.jessie_amd64.deb if you want TokuDB storage engine).


I've just installed a Percona instance of Mysql on an Amazon server and can not find the my.cnf file anywhere. I found auto.cnf in /var/lib/mysql but there is nothing in that file like what I have seen for my standard mysql installs.


A movement against Oracle's acquisition of MySQL AB, to "Save MySQL"[70] from Oracle was started by one of the MySQL AB founders, Monty Widenius. The petition of 50,000+ developers and users called upon the European Commission to block approval of the acquisition. At the same time, some Free Software opinion leaders (including Pamela Jones of Groklaw, Jan Wildeboer and Carlo Piana, who also acted as co-counsel in the merger regulation procedure) advocated for the unconditional approval of the merger.[71][72][73] As part of the negotiations with the European Commission, Oracle committed that MySQL server will continue until at least 2015 to use the dual-licensing strategy long used by MySQL AB, with proprietary and GPL versions available. The antitrust of the EU had been "pressuring it to divest MySQL as a condition for approval of the merger". But, as revealed by WikiLeaks, the US Department of Justice, at the request of Oracle, pressured the EU to approve the merger unconditionally.[74] The European Commission eventually unconditionally approved Oracle's acquisition of MySQL AB on 21 January 2010.[75]


Percona Toolkit is a cross-platform toolkit for MySQL, developed in Perl.[106] Percona Toolkit can be used to prove replication is working correctly, fix corrupted data, automate repetitive tasks, and speed up servers. Percona Toolkit is included with several Linux distributions such as CentOS and Debian, and packages are available for Fedora and Ubuntu as well. Percona Toolkit was originally developed as Maatkit, but as of late 2011, Maatkit is no longer developed.


There are not many details available as to how things are actually implemented but likely but the proxy layer is able to transfer a connection from one server to another when there is a scale up or down event. Essentially, we can assume that when the cluster is modified, the steps are the following:


As the MyRocks storage engine (based on the RocksDB key-value store ) is now available as part of Percona Server for MySQL 5.7, I wanted to take a look at how it performs on a relatively high-end server and SSD storage.


Thread pointer: 0x0Attempting backtrace. You can use the following information to find outwhere mysqld died. If you see no messages after this, something wentterribly wrong...stack_bottom = 0x0 thread_stack 0x48400/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55e2398f739e]/usr/sbin/mysqld(handle_fatal_signal+0x3bd)[0x55e23943897d]2019-02-05 14:27:05 140147802577152 [Note] InnoDB: Percona XtraDB ( ) 5.6.41-84.1 started; log sequence number 275082322538/lib/x86_64-linux-gnu/libpthread.so.0(+0x110c0)[0x7f76b3a3a0c0]/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcf)[0x7f76b25a7fff]/lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x7f76b25a942a]/usr/sbin/mysqld(+0x91ca84)[0x55e2397b0a84]/usr/sbin/mysqld(+0x91cf04)[0x55e2397b0f04]/usr/sbin/mysqld(+0x91dbd9)[0x55e2397b1bd9]/usr/sbin/mysqld(+0x90db54)[0x55e2397a1b54]/lib/x86_64-linux-gnu/libpthread.so.0(+0x7494)[0x7f76b3a30494]/lib/x86_64-linux-gnu/libc.so.6(clone+0x3f)[0x7f76b265dacf]The manual page at containsinformation that should help you find out what is causing the crash.2019-02-05 14:27:11 140428104173824 [Note] InnoDB: Using mutexes to ref count buffer pool pages2019-02-05 14:27:11 140428104173824 [Note] InnoDB: The InnoDB memory heap is disabled2019-02-05 14:27:11 140428104173824 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins2019-02-05 14:27:11 140428104173824 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier2019-02-05 14:27:11 140428104173824 [Note] InnoDB: Compressed tables use zlib 1.2.82019-02-05 14:27:11 140428104173824 [Note] InnoDB: Using Linux native AIO2019-02-05 14:27:11 140428104173824 [Note] InnoDB: Using SSE crc32 instructions2019-02-05 14:27:11 140428104173824 [Note] InnoDB: Initializing buffer pool, size = 4.0G2019-02-05 14:27:11 140428104173824 [Note] InnoDB: Completed initialization of buffer pool2019-02-05 14:27:11 140428104173824 [Note] InnoDB: Highest supported file format is Barracuda.2019-02-05 14:27:11 140428104173824 [Note] InnoDB: Starting crash recovery from checkpoint LSN=2750823219322019-02-05 14:27:11 140428104173824 [Note] InnoDB: Restoring possible half-written data pages from the doublewrite buffer...2019-02-05 14:27:17 140428104173824 [Note] InnoDB: 128 rollback segment(s) are active.2019-02-05 14:27:17 140428104173824 [Note] InnoDB: Waiting for purge to start2019-02-05 14:27:17 140428104173824 [Note] InnoDB: Percona XtraDB ( ) 5.6.41-84.1 started; log sequence number 2750823225482019-02-05 14:27:17 7fb6c3bfb700 InnoDB: Assertion failure in thread 140422944896768 in file trx0purge.cc line 682InnoDB: Failing assertion: purge_sys->iter.trx_no rseg->last_trx_noInnoDB: We intentionally generate a memory trap.InnoDB: Submit a detailed bug report to : If you get repeated assertion failures or crashes, evenInnoDB: immediately after the mysqld startup, there may beInnoDB: corruption in the InnoDB tablespace. Please refer toInnoDB: -innodb-recovery.htmlInnoDB: about forcing recovery.190205 14:27:17 [ERROR] mysqld got signal 6 ;This could be because you hit a bug. It is also possible that this binaryor one of the libraries it was linked against is corrupt, improperly built,or misconfigured. This error can also be caused by malfunctioning hardware.


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