New session variable wsrep_sync_wait has been implemented to control causality check. The old session variable wsrep_causal_reads is deprecated but is kept for backward compatibility (#1277053).
START TRANSACTION WITH CONSISTENT SNAPSHOT,
mydumperwith disabled binlog would lead to a server crash. Bug fixed #1353644.
percona-xtradb-cluster-garbd-3.xpackage was installed incorrectly on Debian/Ubuntu. Bug fixed #1360633.
Fixed netcat in SST script for CentOS 7 nmap-ncat. Bug fixed #1359767.
TOisolation was run even when wsrep plugin was not loaded. Bug fixed #1358681.
The error from net read was not handled in native MySQL mode. This would cause duplicate key error if there was unfinished transaction at the time of shutdown, because it would be committed during the startup recovery. Bug fixed #1358264.
The netcat in garbd init script has been replaced with nmap for compatibility in CentOS 7. Bug fixed #1349384.
SHOW STATUSwas generating debug output in the error log. Bug fixed #1347818.
Incorrect source string length could lead to server crash. This fix allows maximum of 3500 bytes of key material to be populated, longer keys will be truncated. Bug fixed #1347768.
wsrep consistency check is now enabled for
REPLACE ... SELECTas well. This was implemented because pt-table-checksum uses REPLACE .. SELECT during checksumming. Bug fixed #1343209.
Client connections were closed unconditionally before generating SST request. Fixed by avoiding closing connections when wsrep is initialized before storage engines. Bug fixed #1258658.
STATEMENTis now allowed to support pt-table-checksum. A warning (to not use it otherwise) is also added to error log.
其他 bug 修复： #1280270.
更多内容请看online documentation 。
Percona XtraDB Cluster完全兼容MySQL或Percona Server，包括：
数据兼容。Percona XtraDB Cluster可在由MySQL或Percona Server创建的数据库上使用。
应用程序兼容。如果要使用Percona XtraDB Cluster，你的应用程序基本不需要作任何更改。
此次发布的Percona XtraDB Cluster为alpha版本，不建议在实际工作中使用，开发者可据此了解Percona XtraDB Cluster的特性和功能。