# Percona XtraDB Cluster 5.7.17-29.20 is now available **URL:** \ **Category:** Percona XtraDB Cluster 5.x\ **Created:** [April 19, 2017, 8:53am UTC](https://forums.percona.com/t/percona-xtradb-cluster-5-7-17-29-20-is-now-available/5558 "2017-04-19T08:53:11Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![hrvojem](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/hrvojem/32/6_2.png) [@hrvojem](https://forums.percona.com/u/hrvojem)\ **Post date:** [April 19, 2017, 8:53am UTC](https://forums.percona.com/t/percona-xtradb-cluster-5-7-17-29-20-is-now-available/5558/1 "2017-04-19T08:53:11Z")
Percona announces the release of Percona XtraDB Cluster 5.7.17-29.20 on April 19, 2017. Binaries are available from the [downloads section](http://www.percona.com/downloads/Percona-XtraDB-Cluster-57/) or our [software repositories](https://www.percona.com/doc/percona-xtradb-cluster/5.7/install/index.html). NOTE: You can also run Docker containers from the images in the [Docker Hub repository](https://hub.docker.com/r/percona/percona-xtradb-cluster/). Percona XtraDB Cluster 5.7.17-29.20 is now the current release, based on the following: [LIST] [_][Percona Server 5.7.17-13](http://www.percona.com/doc/percona-server/5.7/release-notes/Percona-Server-5.7.17-13.html) [_]Galera Replication library 3.20 [\*]wsrep API version 29 [/LIST] All Percona software is open-source and free. Performance Improvements This release is focused on performance and scalability with increasing workload threads. Tests show up to 10 times increase in performance. Fixed Bugs [LIST] [_]Updated semantics for gcache page cleanup to trigger when either [gcache.keep\_pages\_size](http://../wsrep-provider-index.html#gcache.keep_pages_size) or [gcache.keep\_pages\_count](http://../wsrep-provider-index.html#gcache.keep_pages_count) exceeds the limit, instead of both at the same time. [_]Added support for passing the XtraBackup buffer pool size with the use-memory option under [xtrabackup] and the innodb\_buffer\_pool\_size option under [mysqld] when the --use-memory option is not passed with the inno-apply-opts option under [sst]. [_]Fixed gcache page cleanup not triggering when limits are exceeded. [_]Improved SST and IST log messages for better readability and unification. [_]Excluded the garbd node from flow control calculations. [_]Added extra checks to verify that SSL files (certificate, certificate authority, and key) are compatible before openning connection. [_]Improved parallelism for better scaling with multiple threads. [_]Added validations for DISCARD TABLESPACE and IMPORT TABLESPACE in [PXC Strict Mode](https://www.percona.com/doc/percona-xtradb-cluster/LATEST/features/pxc-strict-mode.html#pxc-strict-mode) to prevent data inconsistency. [_]Added the [wsrep\_flow\_control\_status](http://../wsrep-status-index.html#wsrep_flow_control_status) variable to indicate if node is in flow control (paused). [_][PXC-766](https://jira.percona.com/browse/PXC-766): Added the [wsrep\_ist\_receive\_status](http://../wsrep-status-index.html#wsrep_ist_receive_status) variable to show progress during an IST. [_]Allowed CREATE TABLE … AS SELECT (CTAS) statements with temporary tables (CREATE TEMPORARY TABLE … AS SELECT) in [PXC Strict Mode](https://www.percona.com/doc/percona-xtradb-cluster/LATEST/features/pxc-strict-mode.html#pxc-strict-mode). For more information, see [1666899](https://bugs.launchpad.net/percona-xtradb-cluster/+bug/1666899). [_][PXC-782](https://jira.percona.com/browse/PXC-782): Updated xtrabackup-v2 script to use the [tmpdir](http://../manual/xtrabackup_sst.html#tmpdir) option (if it is set under [sst], [xtrabackup] or [mysqld], in that order). [_][PXC-783](https://jira.percona.com/browse/PXC-783): Improved the wsrep stage framework. [_][PXC-784](https://jira.percona.com/browse/PXC-784): Fixed the pc.recovery procedure to abort if the gvwstate.dat file is empty or invalid, and fall back to normal joining process. For more information, see [1669333](https://bugs.launchpad.net/percona-xtradb-cluster/+bug/1669333). [_][PXC-794](https://jira.percona.com/browse/PXC-794): Updated the [sockopt](http://../manual/xtrabackup_sst.html#sockopt) option to include a comma at the beginning if it is not set by the user. [_][PXC-795](https://jira.percona.com/browse/PXC-795): Set --parallel=4 as default option for wsrep\_sst\_xtrabackup-v2 to run four threads with XtraBackup. [_][PXC-797](https://jira.percona.com/browse/PXC-797): Blocked [wsrep\_desync](http://../wsrep-system-index.html#wsrep_desync) toggling while node is paused to avoid halting the cluster when running FLUSH TABLES WITH READ LOCK. For more information, see [1370532](https://bugs.launchpad.net/percona-xtradb-cluster/+bug/1370532). [_][PXC-805](https://jira.percona.com/browse/PXC-805): Inherited upstream fix to avoid using deprecated variables, such as INFORMATION\_SCHEMA.SESSION\_VARIABLE. For more information, see [1676401](https://bugs.launchpad.net/percona-xtradb-cluster/+bug/1676401). [_][PXC-811](https://jira.percona.com/browse/PXC-811): Changed default values for the following variables: [LIST] [_]fc\_limit from 16 to 100 [_]send\_window from 4 to 10 [_]user\_send\_window from 2 to 4 [/LIST] [_]Moved wsrep settings into a separate configuration file (/etc/my.cnf.d/wsrep.cnf). [_]Fixed mysqladmin shutdown to correctly stop the server on systems using systemd. [\*]Fixed several packaging and dependency issues. [/LIST] Help us improve our software quality by reporting any bugs you encounter using our [bug tracking system](https://bugs.launchpad.net/percona-xtradb-cluster/+filebug). As always, thanks for your continued support of Percona!