Release Notes ************* v2.0.3 released 2012-02-03 ========================== Percona Toolkit 2.0.3 has been released. The development team was very busy last month making this release significant: two completely redesigned and improved tools, pt-diskstats and pt-stalk, and 20 bug fixes. Both pt-diskstats and pt-stalk were redesigned and rewritten from the ground up. This allowed us to greatly improve these tools' functionality and increase testing for them. The accuracy and output of pt-diskstats was enhanced, and the tool was rewritten in Perl. pt-collect was removed and its functionality was put into a new, enhanced pt-stalk. pt-stalk is now designed to be a stable, long-running daemon on a variety of common platforms. It is worth re-reading the documentation for each of these tools. The 20 bug fixes cover a wide range of problems. The most important are fixes to pt-table-checksum, pt-iostats, and pt-kill. Apart from pt-diskstats, pt-stalk, and pt-collect (which was removed), no other tools were changed in backwards-incompatible ways, so it is worth reviewing the full changelog for this release and upgrading if you use any tools which had bug fixes. Thank you to the many people who reported bugs and submitted patches. Download the latest release of Percona Toolkit 2.0 from http://www.percona.com/software/percona-toolkit/ or the Percona Software Repositories (http://www.percona.com/docs/wiki/repositories:start). Changelog --------- * Completely redesigned pt-diskstats * Completely redesigned pt-stalk * Removed pt-collect and put its functionality in pt-stalk * Fixed bug 871438: Bash tools are insecure * Fixed bug 897758: Failed to prepare TableSyncChunk plugin: Use of uninitialized value $args{"chunk_range"} in lc at pt-table-sync line 3055 * Fixed bug 919819: pt-kill --execute-command creates zombies * Fixed bug 925778: pt-ioprofile doesn't run without a file * Fixed bug 925477: pt-ioprofile docs refer to pt-iostats * Fixed bug 857091: pt-sift downloads http://percona.com/get/pt-pmp, which does not work * Fixed bug 857104: pt-sift tries to invoke mext, should be pt-mext * Fixed bug 872699: pt-diskstats: rd_avkb & wr_avkb derived incorrectly * Fixed bug 897029: pt-diskstats computes wrong values for md0 * Fixed bug 882918: pt-stalk spams warning if oprofile isn't installed * Fixed bug 884504: pt-stalk doesn't check pt-collect * Fixed bug 897483: pt-online-schema-change "uninitialized value" due to update-foreign-keys-method * Fixed bug 925007: pt-online-schema-change Use of uninitialized value $tables{"old_table"} in concatenation (.) or string at line 4330 * Fixed bug 915598: pt-config-diff ignores --ask-pass option * Fixed bug 919352: pt-table-checksum changes binlog_format even if already set to statement * Fixed bug 921700: pt-table-checksum doesn't add --where to chunk size test on replicas * Fixed bug 921802: pt-table-checksum does not recognize --recursion-method=processlist * Fixed bug 925855: pt-table-checksum index check is case-sensitive * Fixed bug 821709: pt-show-grants --revoke and --separate don't work together * Fixed bug 918247: Some tools use VALUE instead of VALUES v2.0.2 released 2012-01-05 ========================== Percona Toolkit 2.0.2 fixes one critical bug: pt-table-sync --replicate did not work with character values, causing an "Unknown column" error. If using Percona Toolkit 2.0.1, you should upgrade to 2.0.2. Download the latest release of Percona Toolkit 2.0 from http://www.percona.com/software/percona-toolkit/ or the Percona Software Repositories (http://www.percona.com/docs/wiki/repositories:start). Changelog --------- * Fixed bug 911996: pt-table-sync --replicate causes "Unknown column" error v2.0.1 released 2011-12-30 ========================== The Percona Toolkit development team is proud to announce a new major version: 2.0. Beginning with Percona Toolkit 2.0, we are overhauling, redesigning, and improving the major tools. 2.0 tools are therefore not backwards compatible with 1.0 tools, which we still support but will not continue to develop. New in Percona Toolkit 2.0.1 is a completely redesigned pt-table-checksum. The original pt-table-checksum 1.0 was rather complex, but it worked well for many years. By contrast, the new pt-table-checksum 2.0 is much simpler but also much more efficient and reliable. We spent months rethinking, redesigning, and testing every aspect of the tool. The three most significant changes: pt-table-checksum 2.0 does only --replicate, it has only one chunking algorithm, and its memory usage is stable even with hundreds of thousands of tables and trillions of rows. The tool is now dedicated to verifying MySQL replication integrity, nothing else, which it does extremely well. In Percona Toolkit 2.0.1 we also fixed various small bugs and forked ioprofile and align (as pt-ioprofile and pt-align) from Aspersa. If you still need functionalities in the original pt-table-checksum, the latest Percona Toolkit 1.0 release remains available for download. Otherwise, all new development in Percona Toolkit will happen in 2.0. Download the latest release of Percona Toolkit 2.0 from http://www.percona.com/software/percona-toolkit/ or the Percona Software Repositories (http://www.percona.com/docs/wiki/repositories:start). Changelog --------- * Completely redesigned pt-table-checksum * Fixed bug 856065: pt-trend does not work * Fixed bug 887688: Prepared statements crash pt-query-digest * Fixed bug 888286: align not part of percona-toolkit * Fixed bug 897961: ptc 2.0 replicate-check error does not include hostname * Fixed bug 898318: ptc 2.0 --resume with --tables does not always work * Fixed bug 903513: MKDEBUG should be PTDEBUG * Fixed bug 908256: Percona Toolkit should include pt-ioprofile * Fixed bug 821717: pt-tcp-model --type=requests crashes * Fixed bug 844038: pt-online-schema-change documentation example w/drop-tmp-table does not work * Fixed bug 864205: Remove the query to reset @crc from pt-table-checksum * Fixed bug 898663: Typo in pt-log-player documentation v1.0.1 released 2011-09-01 ========================== Percona Toolkit 1.0.1 has been released. In July, Baron announced planned changes to Maatkit and Aspersa development;[1] Percona Toolkit is the result. In brief, Percona Toolkit is the combined fork of Maatkit and Aspersa, so although the toolkit is new, the programs are not. That means Percona Toolkit 1.0.1 is mature, stable, and production-ready. In fact, it's even a little more stable because we fixed a few bugs in this release. Percona Toolkit packages can be downloaded from http://www.percona.com/downloads/percona-toolkit/ or the Percona Software Repositories (http://www.percona.com/docs/wiki/repositories:start). Although Maatkit and Aspersa development use Google Code, Percona Toolkit uses Launchpad: https://launchpad.net/percona-toolkit [1] http://www.xaprb.com/blog/2011/07/06/planned-change-in-maatkit-aspersa-development/ Changelog --------- * Fixed bug 819421: MasterSlave::is_replication_thread() doesn't match all * Fixed bug 821673: pt-table-checksum doesn't include --where in min max queries * Fixed bug 821688: pt-table-checksum SELECT MIN MAX for char chunking is wrong * Fixed bug 838211: pt-collect: line 24: [: : integer expression expected * Fixed bug 838248: pt-collect creates a "5.1" file v0.9.5 released 2011-08-04 ========================== Percona Toolkit 0.9.5 represents the completed transition from Maatkit and Aspersa. There are no bug fixes or new features, but some features have been removed (like --save-results from pt-query-digest). This release is the starting point for the 1.0 series where new development will happen, and no more changes will be made to the 0.9 series. Changelog --------- * Forked, combined, and rebranded Maatkit and Aspersa as Percona Toolkit.