{"id":86434,"date":"2020-06-25T01:42:11","date_gmt":"2020-06-24T23:42:11","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/stabilnyj-vypusk-subd-mariadb-10-5"},"modified":"2020-06-25T01:42:11","modified_gmt":"2020-06-24T23:42:11","slug":"stabilnyj-vypusk-subd-mariadb-10-5","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/stabilnyj-vypusk-subd-mariadb-10-5","title":{"rendered":"Stabiln\u00ed vyd\u00e1n\u00ed datab\u00e1zov\u00e9ho syst\u00e9mu MariaDB 10.5","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po roce v\u00fdvoje a \u010dty\u0159ech p\u0159edb\u011b\u017en\u00fdch vyd\u00e1n\u00edch <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.org\/mariadb-10-5-4-now-available\/\">p\u0159ipraven<\/a><\/noindex> prvn\u00ed stabiln\u00ed verze nov\u00e9 v\u011btve datab\u00e1zov\u00e9ho syst\u00e9mu <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/mariadb-1054-release-notes\/\">MariaDB 10.4<\/a><\/noindex>, v r\u00e1mci kter\u00e9 se vyv\u00edj\u00ed odvozenina od MySQL, zachov\u00e1vaj\u00edc\u00ed zp\u011btnou kompatibilitu a   <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=39444#note\">vyzna\u010duj\u00edc\u00ed se<\/a><\/noindex> integrac\u00ed dal\u0161\u00edch \u00falo\u017ei\u0161\u0165 dat a roz\u0161\u00ed\u0159en\u00fdmi funkcemi. Podpora nov\u00e9 v\u011btve bude zaji\u0161t\u011bna po dobu 5 let, do \u010dervna 2025. <\/p>\n<p>Rozvoj MariaDB sleduje nez\u00e1visl\u00e1 organizace MariaDB Foundation v souladu s pln\u011b otev\u0159en\u00fdm a transparentn\u00edm procesem v\u00fdvoje, kter\u00fd nen\u00ed z\u00e1visl\u00fd na jednotliv\u00fdch v\u00fdrobc\u00edch. MariaDB se dod\u00e1v\u00e1 m\u00edsto MySQL v mnoha linuxov\u00fdch distribuc\u00edch (RHEL, SUSE, Fedora, openSUSE, Slackware, OpenMandriva, ROSA, Arch Linux, Debian) a je implementov\u00e1na v takov\u00fdch velk\u00fdch projektech, jako jsou <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=36759\">Wikipedia<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=37905\">Google Cloud SQL<\/a><\/noindex> a <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=36506\">Nimbuzz<\/a><\/noindex>.<\/p>\n<p>Kl\u00ed\u010dov\u00e9 <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/mdb-1054-rn\/\">vylep\u0161en\u00ed<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/changes-improvements-in-mariadb-105\/\">MariaDB 10.5<\/a><\/noindex>:\n<\/p>\n<ul>\n<li class=\"l\"> Byl p\u0159id\u00e1n \u00falo\u017en\u00fd engine <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/s3-storage-engine\/\">S3<\/a><\/noindex>, kter\u00fd umo\u017e\u0148uje um\u00edst\u011bn\u00ed tabulek MariaDB do Amazon S3 nebo do jak\u00e9hokoli jin\u00e9ho ve\u0159ejn\u00e9ho \u010di soukrom\u00e9ho cloudov\u00e9ho \u00falo\u017ei\u0161t\u011b, kter\u00e9 podporuje API S3. Podporov\u00e1no je um\u00edst\u011bn\u00ed jak b\u011b\u017en\u00fdch, tak i d\u011blen\u00fdch (partitioned) tabulek. P\u0159i um\u00edst\u011bn\u00ed d\u011blen\u00fdch tabulek do cloudu mohou b\u00fdt pou\u017eity p\u0159\u00edmo i z jin\u00e9ho serveru, kter\u00fd m\u00e1 p\u0159\u00edstup k \u00falo\u017ei\u0161ti S3.\n<li class=\"l\"> Byl p\u0159id\u00e1n \u00falo\u017en\u00fd engine <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/mariadb-columnstore\/\">ColumnStore<\/a><\/noindex>, kter\u00fd ukl\u00e1d\u00e1 data ve sloupc\u00edch a vyu\u017e\u00edv\u00e1 <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%9C%D0%B0%D1%81%D1%81%D0%BE%D0%B2%D0%BE-%D0%BF%D0%B0%D1%80%D0%B0%D0%BB%D0%BB%D0%B5%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F_%D0%B0%D1%80%D1%85%D0%B8%D1%82%D0%B5%D0%BA%D1%82%D1%83%D1%80%D0%B0\">masivn\u011b paraleln\u00ed<\/a><\/noindex> distribuovanou architekturu. Engine je zalo\u017een na technologi\u00edch MySQL \u00falo\u017ei\u0161\u0165 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=25267\">InfiniDB<\/a><\/noindex> a je ur\u010den pro zpracov\u00e1n\u00ed a prov\u00e1d\u011bn\u00ed analytick\u00fdch dotaz\u016f nad velk\u00fdmi objemy dat (Data Warehouse).<br \/>\nColumnStore ukl\u00e1d\u00e1 data nikoli po \u0159\u00e1dc\u00edch, ale ve sloupc\u00edch, co\u017e umo\u017e\u0148uje optimalizovat prov\u00e1d\u011bn\u00ed seskupen\u00ed podle sloupc\u016f z datab\u00e1zov\u00e9ho syst\u00e9mu velk\u00e9ho rozsahu, zahrnuj\u00edc\u00edho petabyty dat. Podporov\u00e1no je line\u00e1rn\u00ed \u0161k\u00e1lov\u00e1n\u00ed, ukl\u00e1d\u00e1n\u00ed dat ve zkomprimovan\u00e9 podob\u011b, vertik\u00e1ln\u00ed a horizont\u00e1ln\u00ed d\u011blen\u00ed, efektivn\u00ed prov\u00e1d\u011bn\u00ed v\u00edce konkuren\u010dn\u00edch dotaz\u016f.<\/p>\n<li class=\"l\"> V\u0161echny spustiteln\u00e9 soubory, kter\u00e9 za\u010d\u00ednaj\u00ed slovem &#171;mysql&#187;, byly p\u0159ejmenov\u00e1ny na z\u00e1klad\u011b slova &#171;mariadb&#187;. Star\u00e9 n\u00e1zvy byly zachov\u00e1ny jako symbolick\u00e9 odkazy.\n<li class=\"l\"> Byl p\u0159id\u00e1n nov\u00fd typ dat <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/inet6\/\">INET6<\/a><\/noindex> pro ukl\u00e1d\u00e1n\u00ed adres IPv6.\n<li class=\"l\"> Byla provedena pr\u00e1ce na rozd\u011blen\u00ed opr\u00e1vn\u011bn\u00ed na men\u0161\u00ed \u010d\u00e1sti. M\u00edsto celkov\u00e9ho opr\u00e1vn\u011bn\u00ed SUPER byla navr\u017eena \u0159ada d\u00edl\u010d\u00edch opr\u00e1vn\u011bn\u00ed &#171;BINLOG ADMIN&#187;,<br \/>\n    &#171;BINLOG REPLAY&#187;,<br \/>\n    &#171;CONNECTION ADMIN&#187;,<br \/>\n    &#171;FEDERATED ADMIN&#187;,<br \/>\n    &#171;READ_ONLY ADMIN&#187;,<br \/>\n    &#171;REPLICATION MASTER ADMIN&#187;,<br \/>\n    &#171;REPLICATION SLAVE ADMIN&#187; a<br \/>\n    &#171;SET USER&#187;. <\/p>\n<li class=\"l\"> Opr\u00e1vn\u011bn\u00ed &#171;REPLICATION CLIENT&#187; bylo p\u0159ejmenov\u00e1no na &#171;BINLOG MONITOR&#187;, a v\u00fdraz &#171;SHOW MASTER STATUS&#187; na &#171;SHOW BINLOG STATUS&#187;. P\u0159ejmenov\u00e1n\u00ed objas\u0148uje chov\u00e1n\u00ed a nesouvis\u00ed s politickou korektnost\u00ed, projekt se nevzd\u00e1v\u00e1 term\u00edn\u016f master\/slave a dokonce p\u0159idal nov\u00e1 opr\u00e1vn\u011bn\u00ed &#171;MASTER ADMIN&#187; a &#171;SLAVE ADMIN&#187;. V SQL v\u00fdrazech byl p\u0159id\u00e1n nov\u00fd kl\u00ed\u010d &#171;REPLICA&#187;, kter\u00fd je synonymem pro &#171;SLAVE&#187;.\n<li class=\"l\"> Pro n\u011bkter\u00e9 v\u00fdrazy byly zm\u011bn\u011bny po\u017eadovan\u00e9 opr\u00e1vn\u011bn\u00ed. &#171;SHOW BINLOG EVENTS&#187; nyn\u00ed vy\u017eaduje pr\u00e1va &#171;BINLOG MONITOR&#187; m\u00edsto &#171;REPLICATION SLAVE&#187;, &#171;SHOW SLAVE HOSTS&#187; vy\u017eaduje opr\u00e1vn\u011bn\u00ed &#171;REPLICATION MASTER ADMIN&#187; m\u00edsto &#171;REPLICATION SLAVE&#187;, &#171;SHOW SLAVE STATUS&#187; vy\u017eaduje pr\u00e1va &#171;REPLICATION SLAVE ADMIN&#187; nebo &#171;SUPER&#187; m\u00edsto &#171;REPLICATION CLIENT&#187;, &#171;SHOW RELAYLOG EVENTS&#187; vy\u017eaduje pr\u00e1va &#171;REPLICATION SLAVE ADMIN&#187; m\u00edsto &#171;REPLICATION SLAVE&#187;.\n<li class=\"l\"> Byly p\u0159id\u00e1ny konstrukce &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/insertreturning\/\">INSERT &#8230; RETURNING<\/a><\/noindex>\u201e a \u201e<noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/replacereturning\/\">REPLACE &#8230; RETURNING<\/a><\/noindex>&#171;, kter\u00e9 vracej\u00ed seznam vlo\u017een\u00fdch\/nahrazen\u00fdch \u0159\u00e1dk\u016f ve form\u00e1tu, jako by hodnoty byly vraceny p\u0159i pou\u017eit\u00ed v\u00fdrazu SELECT (podobn\u011b jako &#171;DELETE &#8230; RETURNING&#187;).\n<p>   INSERT INTO t2 VALUES (1,&#8217;Pes&#8217;),(2,&#8217;Lev&#8217;),(3,&#8217;Tygr&#8217;),(4,&#8217;Levhart&#8217;)<br \/>\n   RETURNING id2,id2+id2,id2&#038;id2,id2||id2;<br \/>\n   +&#8212;&#8212;+&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;-+<br \/>\n   | id2 | id2+id2 | id2&#038;id2 | id2||id2 |<br \/>\n   +&#8212;&#8212;+&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;-+<br \/>\n   |   1 |       2 |       1 |        1 |<br \/>\n   |   2 |       4 |       2 |        1 |<br \/>\n   |   3 |       6 |       3 |        1 |<br \/>\n   |   4 |       8 |       4 |        1 |<br \/>\n   +&#8212;&#8212;+&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;-+<\/p>\n<li class=\"l\"> Byly p\u0159id\u00e1ny v\u00fdrazy &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/except\/\">EXCEPT ALL<\/a><\/noindex>\u201e a \u201e<noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/intersect\/\">INTERSECT ALL<\/a><\/noindex>&#187; pro vylou\u010den\u00ed\/p\u0159id\u00e1n\u00ed v\u00fdsledku o ur\u010dit\u00fd soubor hodnot.\n<li class=\"l\"> Objevil se mo\u017enost uv\u00e1d\u011bt koment\u00e1\u0159e uvnit\u0159 blok\u016f &#171;CREATE DATABASE&#187; a &#171;ALTER DATABASE&#187;.\n<li class=\"l\"> Byly p\u0159id\u00e1ny konstrukce pro p\u0159ejmenov\u00e1n\u00ed index\u016f a sloupc\u016f &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/alter-table\/#rename-indexkey\">ALTER TABLE &#8230; RENAME INDEX \/ KEY<\/a><\/noindex>&#187; a &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/alter-table\/#rename-column\">ALTER TABLE &#8230; RENAME COLUMN<\/a><\/noindex>&#171;.\n<li class=\"l\"> V operaci &#171;ALTER TABLE&#187; a &#171;RENAME TABLE&#187; byla p\u0159id\u00e1na podpora podm\u00ednky &#171;IF EXISTS&#187; pro prov\u00e1d\u011bn\u00ed operace pouze p\u0159i existenci tabulky;\n<li class=\"l\"> Pro indexy v &#171;CREATE TABLE&#187; byl realizov\u00e1n atribut &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/create-table\/#visible-index-option\">VISIBLE<\/a><\/noindex>&#171;.\n<li class=\"l\"> Bylo p\u0159id\u00e1no v\u00fdrazu &#171;CYCLE&#187; pro identifikaci rekurzivn\u00edch cykl\u016f. <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/common-table-expressions\/\">CTE<\/a><\/noindex>.\n<li class=\"l\"> Byly p\u0159id\u00e1ny funkce <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/json_arrayagg\/\">JSON_ARRAYAGG<\/a><\/noindex> a <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/json_objectagg\/\">JSON_OBJECTAGG<\/a><\/noindex> pro vracen\u00ed pole nebo objektu JSON s hodnotami dan\u00e9ho sloupce.\n<li class=\"l\"> Byly p\u0159id\u00e1ny syst\u00e9mov\u00e9 informa\u010dn\u00ed tabulky (THREAD_POOL_GROUPS, THREAD_POOL_QUEUES, THREAD_POOL_STATS a THREAD_POOL_WAITS) pro pool vl\u00e1ken (thread_pool).\n<li class=\"l\"> V\u00fdraz ANALYZE byl roz\u0161\u00ed\u0159en o zobrazen\u00ed \u010dasu, kter\u00fd je str\u00e1ven na kontrole bloku WHERE a prov\u00e1d\u011bn\u00ed pomocn\u00fdch operac\u00ed.\n<li class=\"l\"> V optimaliz\u00e1toru zpracov\u00e1n\u00ed rozsah\u016f byly zohledn\u011bny p\u0159\u00edznaky &#171;IS NOT NULL&#187;\n<li class=\"l\"> V\u00fdrazn\u011b byla zkr\u00e1cena velikost do\u010dasn\u00fdch soubor\u016f pou\u017e\u00edvan\u00fdch p\u0159i t\u0159\u00edd\u011bn\u00ed s typy VARCHAR, CHAR a BLOB.\n<li class=\"l\"> V <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/binary-log\/\">bin\u00e1rn\u00ed log<\/a><\/noindex>, pou\u017e\u00edvan\u00fd pro organizaci replikace, byly p\u0159id\u00e1ny nov\u00e1 pole s metadaty, v\u010detn\u011b Primary Key, Column Name, Character Set a Geometry Type. V n\u00e1stroji mariadb-binlog a p\u0159\u00edkazech &#171;SHOW BINLOG EVENTS&#187; a &#171;SHOW RELAYLOG EVENTS&#187; byla zaji\u0161t\u011bna indikace replika\u010dn\u00edch p\u0159\u00edznak\u016f.\n<li class=\"l\"> Konstrukce <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/drop-table\/\">DROP TABLE<\/a><\/noindex> nyn\u00ed spolehliv\u011b <noindex><a rel=\"nofollow\" href=\"https:\/\/jira.mariadb.org\/browse\/MDEV-11412\">odstra\u0148uje<\/a><\/noindex> tabulky, kter\u00e9 z\u016fst\u00e1vaj\u00ed ve storage enginu, i kdy\u017e chyb\u00ed soubory &#171;.frm&#187; nebo &#171;.par&#187;.\n<li class=\"l\"> Byla realizov\u00e1na hardwarov\u011b akcelerovan\u00e1 varianta funkce crc32() pro CPU AMD64, ARMv8 a POWER 8.\n<li class=\"l\"> Byly zm\u011bn\u011bny n\u011bkter\u00e9 v\u00fdchoz\u00ed nastaven\u00ed. Parametr innodb_encryption_threads byl zv\u00fd\u0161en na 255 a hodnota max_sort_length byla zv\u00fd\u0161ena z 4 na 8.\n<li class=\"l\"> Byly p\u0159edstaveny \u010detn\u00e9 optimalizace v\u00fdkonu motoru InnoDB.\n<li class=\"l\"> Do mechanismu synchronn\u00ed multi-master replikace Galera byla p\u0159id\u00e1na pln\u00e1 podpora  <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/gtid\/\">GTID<\/a><\/noindex> (Global Transaction ID), jednotn\u00fdch identifik\u00e1tor\u016f transakc\u00ed pro v\u0161echny uzly clusteru.\n<li class=\"l\"> Byl proveden p\u0159echod na novou v\u011btev knihovny <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/pcre\/\">PCRE2<\/a><\/noindex> (Perl Compatible Regular Expressions), m\u00edsto klasick\u00e9 s\u00e9rie PCRE 8.x.\n<li class=\"l\"> Byly navr\u017eeny nov\u00e9 verze wrapper\u016f pro p\u0159ipojen\u00ed k datab\u00e1z\u00edm MariaDB a MySQL z aplikac\u00ed v jazyc\u00edch Python a C: <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/mariadb-connector-python-100-release-notes\/\">MariaDB Connector\/Python 1.0.0<\/a><\/noindex> a  <noindex><a rel=\"nofollow\" href=\"https:\/\/mariadb.com\/kb\/en\/mariadb-connector-c-319-release-notes\/\">MariaDB Connector\/C 3.1.9<\/a><\/noindex>. Wrapper pro Python odpov\u00edd\u00e1 Python DB API 2.0, je naps\u00e1n v jazyce C a pou\u017e\u00edv\u00e1 knihovnu Connector\/C pro p\u0159ipojen\u00ed k serveru.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53225\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0433\u043e\u0434\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0438 \u0447\u0435\u0442\u044b\u0440\u0451\u0445 \u043f\u0440\u0435\u0434\u0432\u0430\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0432\u044b\u043f\u0443\u0441\u043a\u043e\u0432 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u043f\u0435\u0440\u0432\u044b\u0439 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0439 \u0440\u0435\u043b\u0438\u0437 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 \u0421\u0423\u0411\u0414 MariaDB 10.4, \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u043e\u0442\u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435 \u043e\u0442 MySQL, \u0441\u043e\u0445\u0440\u0430\u043d\u044f\u044e\u0449\u0435\u0435 \u043e\u0431\u0440\u0430\u0442\u043d\u0443\u044e \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u044c \u0438 \u043e\u0442\u043b\u0438\u0447\u0430\u044e\u0449\u0435\u0435\u0441\u044f \u0438\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u0435\u0439 \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0434\u0432\u0438\u0436\u043a\u043e\u0432 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0438 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u044b\u0445 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