MySQL 5.5.42/5.6.23 发布

MySQL 5.5.42 发布，此版本现已提供下载，更新内容如下：

新功能和功能改进

• 支持 SSL 2.0 协议，禁用 SSL 3.0 协议，同时还支持 TLS 1.1 和 TLS 1.2 协议 (Bug #19820550)

  References: See also Bug #19921150.

• yaSSL 升级到 2.3.7 版本 (Bug #19695101, Bug #20201864)

• mysql-test/std_data 上的 SSL 证书有效期延长至 2029 年(Bug #18366947)

Bugs 修复

• InnoDB: A multiple-table delete operation caused the server to halt. (Bug #19815702)

• Replication: If a DROP DATABASE statement failed on the master, mismatched tables could be left on the slave, breaking replication. This was caused by the DROPTABLE statement being binary logged if at least one table was deleted during the DROP DATABASE operation. The fix ensures that in such a situation the        DROP TABLE statement is binary logged with the IF EXISTS option.  (Bug #74890, Bug #20041860)

• Unlocking a temporary table after locking and truncating it  could cause a server exit.  (Bug #19786309)

• The Enterprise Encryption plugin could mishandle string  arguments.  (Bug #19688008)

• FLUSH TABLES on a FEDERATED table failed if the table had  been idle longer than the   wait_timeout time plus the TCP keepalive time.  (Bug #17599258)

• Selecting all columns from INFORMATION_SCHEMA.TABLES did not reopen tables if they were in the table cache, but selecting a subset of those columns under the same conditions did reopen tables. (Bug #16869534)

• MySQL failed to compile with GCC 4.9.1 in debug mode.  (Bug #74710, Bug #19974500)

• A file created for an internal temporary table could cause  problems if the file was orphaned for some reason and the file name was reused for later queries. (Bug #32917, Bug #11747548)