This section documents all changes and bug fixes applied since the release of 1.4.2, and is the first General Availability (GA) release of the 1.4.x branch.
With fabric, a move_shard operation failed if the client
password was defined in
Due to the several changes in the high-availability and sharding sub-systems, the automatic routine to automatically find the lockable objects for a given procedure was not always valid. The consequence was that some procedures may have tried to update the same group concurrently when they should have been serialized. (Bug #18712020, Bug #72553)
When executing "mysqlfabric manage setup", some of the generated
"CREATE TABLE" statements were explicitly requesting the InnoDB
engine and ignoring the
default-storage-engine option, thus
preventing use of NDB as a state store.
Any empty password definition ("
password = ")
in the configuration file would emit errors.
(Bug #18524482, Bug #72149)
FailoverDaemon class from the
failover_daemon module was refactored to extend the
Daemon class, so that the duplicated code was
Remote commands were authenticating the request twice, both before and after the command was sent to Fabric. This meant unnecessary requests were made to the state store. (Bug #18477189)
Executing "mysqlfabric manage setup" would sometimes halt with a connection error due to a short timeout. (Bug #18458461)
Commands failed if the "protocol.xmlrpc.user" option was not provided in the configuration file or from the command-line. Now, the user "admin" is the default. (Bug #18459012)
A "group add" with a server as "localhost:32274" caused Fabric to hang, as 32274 is the port used by Fabric. (Bug #18454737, Bug #72119)
A "PROMOTE" after "RESET MASTER" would cause Fabric to hang. Now, "SHOW SLAVE STATUS" is used to check whether the slave has processed all of the entries in the relay log. (Bug #18454679, Bug #72118)
The mysqldbcompare utility was not correctly checking differences for different rows internally associated to the same span key. Only the first difference was displayed. (Bug #18477410)
Optimizations to the mysqldbcompare utility include:
A new step was added to the data consistency check, now
CHECKSUM TABLE first (which
is faster when no differences are expected). The current
comparison algorithm is only execute if this preliminary
full table checksum fails. A new
--skip-checksum-table option was added to
skip this new step that otherwise is executed by default.
BINARY type is used instead of
CHAR to store hash values in a more
Unnecessary keys were removed from the temporary table (including the primary key).
ENGINE=MyISAM is now used for the
temporary compare table.
The temporary table created by the mysqldbcompare utility was missing an index for the 'span' column, meaning that the "_COMPARE_SUM" and "_COMPARE_DIFF" queries were doing full table scans. (Bug #18483844)
Some Fabric commands, such as "server.set_status" and "group.promote", accepted a reference to a MySQL server's uuid but not a reference to an address and port. (Bug #18440617, Bug #72094)
The mysqlrplms utility did check the MySQL server version when executed on MySQL server 5.7. (Bug #18434209)
With fabric, the
pylint_tests script mixed
the output from both pep8 and pylint results. A new
--tester option was added that allows the
tester to be chosen, which can be either "pylint", "pep8", or
"all" (the default).
Invoking the mysqlfabric utility with the wrong number of parameters would display general usage help for the utility, but it now shows help for the specified command. (Bug #18370958)
The mysqlrplsync utility was allowing the
--exclude option to take an empty value, and
the user was not notified. This now generates an error.
The mysqldbcopy utility threw an internal
Python exception when
--rpl=slave was passed
in without specifying
The "__name__ == '__main__'" attribute check was added to all scripts that can be executed as a standalone program. (Bug #18376793)
The mysqldbcopy, mysqldbimport and mysqldbexport utilities were not fully functional for all possible data types. Prefixes such as TINY, SMALL, MEDIUM, and BIG were not being taken into account when verifying the column data type.
This issue was only present when the source server did not equal the destination server. In other words, when copied and not cloned. (Bug #18373190, Bug #71890)
The mysqldbexport utility would export BLOB rows using two statements; an INSERT followed by an UPDATE. This did not function if the exported table did not have at least one "UNIQUE NOT NULL INDEX", since UPDATE statements cannot uniquely identify each row. Now, they are exported using a single INSERT statement. (Bug #18373190, Bug #71890)
dump.shard_* did not take into account
disabled shards, and therefore reported disabled shards through
the dump interface.
(Bug #18259479, Bug #71701)
The mysqlserverinfo utility threw an internal
Python exception when passing a non-existent server to
The mysqslindexcheck utility was considering
a PRIMARY key as redundant when this key was compared to a
unique index with more columns than the PRIMARY key, which
caused the DROP statement to be displayed as "None;" with the
--show-drops option. In this scenario, the
index key is now marked as redundant instead of the PRIMARY key.
(Bug #18281513, Bug #71745)
The mysqlauditgrep utility did not support changes made to the audit log format in the "NEW" format. Both "NEW" and "OLD" formats are now supported.
defaults to "OLD" in MySQL server 5.6, and "NEW" in MySQL server
(Bug #18314951, Bug #71838)
indexcheck option was added to the
mysqlindexcheck utility. It reports on tables
without a PRIMARY or UNIQUE key. Previously, this information
was only available with a high verbosity level
(Bug #18241174, Bug #71690)
mysqldbcompare failed to properly compare the same views on different schemas. This caused the objects to be seen differently. (Bug #17864081, Bug #71022)
Because each xmlrpc session requires a database connection, it is possible to exceed the maximum number of connections in the backing store. The failure detector did not function properly when the number of connections was exceeded, and as such it could not promote a new server to the master. This scenario now generates an exception when fabric starts with the built-in failure detector is enabled. (Bug #17747197)
In MySQL Utilities v1.3.x, the second call to the mysqlfailover utility could fail. (Bug #71724)
would stop processing when a blank line was encountered.
However, the General Query Log may include multi-line statements
that include blank lines.