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Tokudb

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TokuDB advantages

TokuDB advantages

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    Tokudb Tokudb Presentation Transcript

    • Transaction friendly engine that is better than InnoDB TokuDB may take the same amount of time to complete the query if the data is small and fits in memory. But with huge data, InnoDB is not able to perform while tokuDB gives you quick results.
    • Data warehouse / big data solution TokuDB may take the same amount of time to complete the query if the data is small and fits in memory. But with huge data, InnoDB is not able to perform while tokuDB gives you quick results.
    • Mysql engine • Integrates with MySQL as an engine • TOkuDB is an engine just like MyISAM and InnoDB. It is listed as default engine in the output of "show engines" command. • No separate process when you start mysql all including myisam, innodb and tokudb are available
    • 15% compressed files on disk !! • TokuDB compresses data upto 15 to 20% compared to MyISAM or InnODB. • • • • • • • Tokudb disk consumption: -rwxrwx--x 1 root root 222M Oct 25 19:27 _akola_ticket_main_41e0_1_18_B_0.tokudb -rwxrwx--x 1 root root 68M Oct 25 19:27 _akola_ticket_key_tripindex_41e0_1_18_B_2.tokudb -rwxrwx--x 1 root root 52M Oct 25 19:27 _akola_ticket_key_route_no_41e0_1_18_B_5.tokudb -rwxrwx--x 1 root root 50M Oct 25 19:27 _akola_ticket_key_adjtripno_41e0_1_18_B_3.tokudb -rwxrwx--x 1 root root 36M Oct 25 19:42 _akola_ticket_key_wbindex_41e0_1_18_B_1.tokudb -rwxrwx--x 1 root root 34M Oct 25 19:27 _akola_ticket_key_NewIndex1_41e0_1_18_B_4.tokudb • • • MyISAM disk consumption for the same table: -rw-rw---- 1 root root 1.5G Jul 10 00:36 ticket.MYD -rw-rw---- 1 root root 335M Jul 10 00:40 ticket.MYI
    • compatible sql • Foreign keys are not supported • Transactions are supported • I can simply alter table to toku using alter table statement. alter table tbl_name engine=TokuDB; • Or I can take the backup of tables from other engines and restore them to tokudb • mysqldump db_name --routines -compatible=no_table_options > db_name_to_toku.sql Since TokuDB is the default engine, it will be converted to tokudb while restoring data.
    • Crash recovery • TOkuDB has one of the excellent crash recovery feature just like InnoDB (that MyISAM is missing!)
    • Replication — Eliminate Slave Lag • MySQL’s single threaded design often leads to slave lag. With TokuDB, slave lag is eliminated. This insures replication can be used for read scaling, backups, and disaster recovery, without resorting to sharding, expensive hardware.
    • Hot Schema Changes in Seconds • TokuDB introduced Hot Column Addition (HCAD). You can add or delete columns from an existing table with no downtime.
    • No need to configure parameters • There is no need to change my.cnf file • You may need to change only 2 following options • if you get an error: Too many open files open-files-limit=40000 • You may need to disable sql mode sql_mode='‘ • By default, TokuDB uses about half the memory of the machine as buffer pool
    • disk consumption • InnoDB stores data in ibdata files and the disk consumption is not reduced even if you drop tables. TokuDB tables works like MyISAM and frees the disk space immediately once you drop / truncate tables.
    • Adding path • You may need to add the path • export PATH=$PATH:/root/percona-5.5.30tokudb-7.0.1-fedora-x86_64/bin
    • Install TokuDB part I • groupadd mysql • useradd -r -g mysql mysql • wget http://www.percona.com/redir/downloads/TESTING/PerconaTokuDB/percona-5.5.30-tokudb-7.0.1-fedora-x86_64.tar.gz • tar zxvf percona-5.5.30-tokudb-7.0.1-fedora-x86_64.tar.gz • • • ln -s `pwd`/percona-5.5.30-tokudb-7.0.1-fedora-x86_64 /usr/local/mysql • • chown -R mysql . chgrp -R mysql . cd /usr/local/mysql
    • Install TokuDB part II • scripts/mysql_install_db --user=mysql • • chown -R root . chown -R mysql data • mkdir /var/run/mysqld • bin/mysqld_safe --user=root & • • • • • • # make sure that my.cnf has the following parameter: user=root # make sure that the following line is commented in my.cnf #socket=/var/lib/mysql/mysql.sock # you may need to provide socket file path while using command line mysql --socket=/var/lib/mysql/mysql.sock