Percona XtraDB Cluster 5.5.33-23-7.6...

Percona XtraDB Cluster (Galera Cluster) 出新版:「Percona XtraDB Cluster 5.5.33-23.7.6 is now available」。

看到了幾個比較特別的功能:

Desync functionality has now been exposed to the client. This can be done either via /*! WSREP_DESYNC */ comment on the query or by setting the global wsrep_desync variable to 1.

這個功能感覺上是打算為了在 Percona Toolkit 裡面配合 pt-table-sync 而準備的?

另外一個重要的功能是限速,這可以避免在伺服器最忙碌的時候加重負擔造成伺服器撐不住:

Percona XtraDB Cluster has implemented new rate limiting, rlimit, option for XtraBackup SST that can be used to avoid saturating the donor node.

以往我是自己 patch 一個 shell script 出來用,現在則變成是原生支援,那麼本來的 patch 方式就要轉換到原生支援上...

然後文末有建議 Debian 使用者在升級前要先安裝 socat,避免升級發生問題 :o

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One Response to Percona XtraDB Cluster 5.5.33-23-7.6...

  1. Stephon Bo-Chong Chen says:

    這個升級會沒辦法同時間新版接舊版 PXC(因為從 nc 換成 socat)

    所以得注意這個狀況...

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