09276597be
Changes in MySQL 5.5.62 Functionality Added or Changed * Previously, file I/O performed in the I/O cache in the mysys library was not instrumented, affecting in particular file I/O statistics reported by the Performance Schema about the binary log index file. Now, this I/O is instrumented and Performance Schema statistics are accurate. Thanks to Yura Sorokin for the contribution. * The zlib library version bundled with MySQL was raised from version 1.2.3 to version 1.2.11. MySQL implements compression with the help of the zlib library. * The zlib compressBound() function in zlib 1.2.11 returns a slightly higher estimate of the buffer size required to compress a given length of bytes than it did in zlib version 1.2.3. The compressBound() function is called by InnoDB functions that determine the maximum row size permitted when creating compressed InnoDB tables or inserting rows into compressed InnoDB tables. As a result, CREATE TABLE ... ROW_FORMAT=COMPRESSED or INSERT operations with row sizes very close to the maximum row size that were successful in earlier releases could now fail. Bugs Fixed * MySQL Server and test RPM packages were missing perl-Data-Dumper as a dependency. * For the mysql client, the -b short option was associated with two long options, --no-beep and --binary-as-hex. The -b option now is associated only with --no-beep. * During server startup/shutdown, PID files could be mishandled. * For MEMORY tables, memory overflow errors could occur. * When converting from a BLOB (or TEXT) type to a smaller BLOB (or TEXT) type, no warning or error was reported informing about the truncation or data loss. Now an appropriate error is issued in strict SQL mode and a warning in nonstrict SQL mode. * ALTER TABLE ... REORGANIZE PARTITION ... could result in incorrect behavior if any partition other than the last was missing the VALUES LESS THAN part of the syntax. |
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