Changes in MySQL Shell 8.0.14 (2019-01-21)
* Functionality Added or Changed
* Bugs Fixed
Functionality Added or Changed
* When started from the command line, MySQL Shell prints
information about the product, information about the
session (such as the default schema and connection ID),
warning messages, and any errors that are returned during
startup and connection. You can now suppress printing of
information that you do not need by using the
--quiet-start[=1|2] mysqlsh command-line option. With a
value of 1 (the default when the option is specified),
information about the MySQL Shell product is not printed,
but session information, warnings, and errors are
printed. With a value of 2, only errors are printed.
As part of this work, the printed information was tidied
up so that the information about the MySQL Shell product
is printed before the information about the session.
Also, the handling of error printing was normalized to
send diagnostic data to stderr, and errors to stdout.
(Bug #28833718, Bug #28855291)
* MySQL Shell connections using classic MySQL protocol now
support compression for information sent between the
client and the server. You can specify compression when
you start MySQL Shell and connect using command line
options, or in a URI string or a key-value pair when you
create a session using other interfaces. You can also use
the MySQL Shell configuration option defaultCompress to
enable compression for every global session.
For MySQL Shell connections that use Unix socket files,
the --socket command line option can now be specified
with no argument to connect using the default Unix socket
file for the protocol. (Bug #28730149)
* The Cluster.status() operation has been extended to
enable you to display information about the underlying
Group Replication group used by the cluster. Now you can
retrieve information from all members of a cluster
without having to connect to each member individually.
To see information about the groupName and memberId; and
general statistics about the number of transactions
checked, proposed, and rejected by members issue:
Cluster.status(extended:true)
To see information about recovery and regular transaction
I/O, applier worker thread statistics and any lags;
applier coordinator statistics, if parallel apply is
enabled; error, and other information from I/O and
applier threads issue
Cluster.status(queryMembers:true)
In addition, in previous versions the URI-type string
shown for groupInformationSourceMember in the output of
Cluster.status() could be the cluster's MySQL Router
address, rather than the address of the instance which
provided the displayed group information. This has been
improved to ensure groupInformationSourceMember always
shows the correct hostname, or report_host, value and
port, or report_port, value of the instance which
provided the group information.
As part of this work, the integration of MySQL Router to
InnoDB cluster has been improved.
(Bug #28636963, Bug #26519466, Bug #27824265, Bug #28366027)
* The MySQL Shell JSON import utility can now process BSON
(binary JSON) data types that are represented in JSON
documents. The data types used in BSON documents are not
all natively supported by JSON, but can be represented
using extensions to the JSON format. The import utility
can process documents that use JSON extensions to
represent BSON data types, convert them to an identical
or compatible MySQL representation, and import the data
value using that representation. The resulting converted
data values can be used in expressions and indexes, and
manipulated by SQL statements and X DevAPI functions.
To convert JSON extensions for BSON types into MySQL
types in this way, you must specify the convertBsonTypes
option when you run the import utility. Additional
options are available to control the mapping and
conversion for specific BSON data types. If you import
documents with JSON extensions for BSON types and do not
use this option, the documents are imported in the same
way as they are represented in the input file.
* A MySQL Shell configuration option showColumnTypeInfo and
command line option --column-type-info have been added to
display metadata for each column in a returned result
set, such as the column type and collation. The metadata
is printed before the result set, and is only shown in
SQL mode.
In the metadata, the column type is returned as both the
type used by MySQL Shell (Type), and the type used by the
original database (DBType). For MySQL Shell connections
using classic MySQL protocol, DBType is as returned by
the protocol, and for X Protocol connections, DBType is
inferred from the available information. The column
length (Length) is returned in bytes.
* The upgrade checker utility provided by MySQL Shell,
which is the checkForServerUpgrade() function of the util
global object, has several enhancements:
+ The utility can now select and provide advice and
instructions for relevant checks that cannot be
automated, and must be performed manually. The
manual checks are rated as either warning or notice
(informational) level, and are listed after the
automated checks. In MySQL Shell 8.0.14, the utility
provides advice where relevant about the change of
default authentication plugin in MySQL 8.0.
+ A check has been added for the removed log_syslog_*
system variables that previously configured error
logging to the system log (the Event Log on Windows,
and syslog on Unix and Unix-like systems).
+ A check has been added for specific schema
inconsistencies that can be caused by the deletion
or corruption of a file, including the removal of
the directory for a schema and the removal of a .frm
file for a table.
You can access the upgrade checker utility from within
MySQL Shell or start it from the command line. For
instructions and further information, see MySQL Shell
Utilities
(http://dev.mysql.com/doc/mysql-shell/8.0/en/mysql-shell-utilities.html).
* MySQL Shell can print results in table, tabbed, or
vertical format, or as pretty or raw JSON output. From
MySQL Shell 8.0.14, the new MySQL Shell configuration
option resultFormat can be used to specify any of these
output formats as a persistent default for all sessions,
or just for the current session. Changing this option
takes effect immediately. Alternatively, the new command
line option --result-format can be used at startup to
specify the output format for a session. The existing
command line options --table, --tabbed, and --vertical
are now aliases for the --result-format option given with
the corresponding value.
The existing command line option --json controls JSON
wrapping for all MySQL Shell output from a session.
Specifying --json or --json=pretty turns on JSON wrapping
and generates pretty-printed JSON. Specifying --json=raw
turns on JSON wrapping and generates raw JSON. With any
of these options, the value of the resultFormat MySQL
Shell configuration option is ignored. Specifying
--json=off or not specifying the --json option turns off
JSON wrapping, and result sets are output as normal in
the format specified by the resultFormat configuration
option.
The outputFormat MySQL Shell configuration option is now
deprecated. This option combined the JSON wrapping and
result printing functions, which have now been separated.
If this option is still specified in your MySQL Shell
configuration file or scripts, the behavior is as
follows:
+ With the json or json/raw value, outputFormat
activates JSON wrapping with pretty or raw JSON
respectively.
+ With the table, tabbed, or vertical value,
outputFormat turns off JSON wrapping and sets the
resultFormat MySQL Shell configuration option for
the session to the appropriate value.
* The V8 library used by MySQL Shell has been updated to
version 6.7.288.46.
* AdminAPI no longer relies on the mysqlprovision check
command. This work has resulted in the following:
+ The errors field in the JSON returned by
dba.checkInstanceConfiguration() has been removed,
because it was only used to hold errors issued by
mysqlprovision. Any errors are now reported
directly, for example as RuntimeError.
+ The dba.verbose value no longer influences the
amount of debug information displayed for
dba.checkInstanceConfiguration() and
dba.configureLocalInstance() because it was only
used to control the verbosity of the information
displayed from mysqlprovision. Instead, the generic
verbose value from MySQL Shell is used to control
the verbosity level for those functions.
+ In addition, the messages returned have been
generally improved to make them more accurate.
References: See also: Bug #28737777, Bug #27305806,
Bug #28768627, Bug #27702439, Bug #28733883.
* When you create a cluster, you can set the timeout before
instances are expelled from the cluster, for example when
they become unreachable. Pass the new expelTimeout option
to the dba.createCluster() operation, which configures
the group_replication_member_expel_timeout variable on
the seed instance. All instances running MySQL server
8.0.13 and later which are added to the cluster are
automatically configured to have the same
group_replication_member_expel_timeout value as defined
when the cluster was created using expelTimeout.
* You can configure an InnoDB cluster's underlying Group
Replication group while the cluster remains online. This
enables you to choose a specific instance as the single
primary, or to change between single-primary and
multi-primary mode without taking the cluster offline.
This uses the group coordinator and the equivalent UDFs
added in WL#10378 (https://dev.mysql.com/worklog/task/?id=10378),
see "Configuring an Online Group"
(http://dev.mysql.com/doc/refman/8.0/en/group-replication-configuring-online-group.html).
Use the following Cluster object operations:
+ Cluster.switchToSinglePrimaryMode([instance]), which runs
group_replication_switch_to_single_primary_mode() on
the underlying group, using instance as the primary,
all other instances become secondaries
+ Cluster.switchToMultiPrimaryMode(), which runs
group_replication_switch_to_multi_primary_mode() on
the underlying group, all instances become primaries
+ Cluster.setPrimaryInstance(instance), which runs
group_replication_set_as_primary() on the underlying
group, configuring instance as the new primary
* You can now configure the InnoDB cluster options of
instances at a cluster level, while instances remain
online. This avoids the need to remove, reconfigure and
then again add the instance to change InnoDB cluster
options. Use the following operations:
+ Cluster.options() to verify the settings of a
cluster and its instances
+ Cluster.setOption(option, value) to change settings
of all cluster instances globally
+ Cluster.setInstanceOption(instance, option, value)
to change settings of individual cluster instances
The way which you use InnoDB cluster options with the
operations listed depends on whether the option can be
changed to be the same on all instances or not. These
options are changeable at both the cluster (all
instances) and per instance level:
+ exitStateAction
+ memberWeight
This option is changeable at the per instance level only:
+ label
These options are changeable at the cluster level only:
+ failoverConsistency
+ expelTimeout
+ clusterName
* The cluster.rescan() operation has been extended to
enable you to detect changes to the cluster's topology,
and modfiy the cluster metadata, for example to remove
old instance data. Now you can:
+ use the updateTopologyMode option to detect if the
Group Replication mode (single-primary or
multi-primary mode) registered in the metadata
matches the current mode of the cluster, updating
that information in the metadata if requested
through a new option or by a prompt confirmation.
You can use this option to update the metadata after
using the
Cluster.switchToSinglePrimaryMode([instance]) and
Cluster.switchToMultiPrimaryMode() options added in
WL#12052
(https://dev.mysql.com/worklog/task/?id=12052).
+ use the addInstances option to specify a list of new
instances to add to the metadata, or the
removeInstances option to specify a list of obsolete
instances to remove from the metadata. Pass the auto
value to these options to automatically add or
remove instances from the metadata, without having
to specify an explicit list of instances. This
enables the function to update the metadata even in
non-interactive mode, making it consistent with the
other AdminAPI operations.
+ In addition, a new interactive option has been added
to the cluster.rescan() operation, to enable or
disable interactive mode prompts specifically for
the cluster.rescan() command.
References: See also: Bug #28997465, Bug #28529362,
Bug #28889563.
Bugs Fixed
* The TAR build of MySQL Shell comes with Python 2.7. When
attempting to include the site package, an error was
emitted because of missing build files needed by the
include. (Bug #28973138)
* Handling procedures for user-supplied data in MySQL Shell
were refactored to ensure correct cleanup after use.
(Bug #28915716)
* The exception type and error messages returned by MySQL
Shell functions for parameter errors have been
standardized across the different functions.
(Bug #28838958)
* MySQL Shell stopped unexpectedly if the
shell.setCurrentSchema() method was called to set the
default schema before an active session had been
established. MySQL Shell now validates that there is an
active session when the operation takes place.
(Bug #28814112)
* The MySQL Shell JSON import utility no longer requires an
empty dictionary to be supplied if there are no import
options. (Bug #28768585)
* In SQL mode, MySQL Shell does not add statements to the
history if they include the strings IDENTIFIED or
PASSWORD, or other strings that you configure using the
--histignore command option or
shell.options["history.sql.ignorePattern"]. However, this
previously meant that filtered-out statements were not
available to be corrected immediately after entry, and
had to be re-typed in case of any errors. MySQL Shell now
always makes the last executed statement available to be
recalled by pressing the Up arrow, regardless of the
filters set in the history ignore list. If filtering
applies to the last executed statement, it is removed
from the history as soon as another statement is entered,
or if you exit MySQL Shell immediately after executing
the statement. (Bug #28749037)
* The result printing logic in MySQL Shell has been
refactored to use back-end rather than high-level result
data, delivering performance improvements for all types
of result data and more accurate representation for JSON
data. (Bug #28710831)
* A memory leak was fixed that occurred when the new MySQL
Shell command-line syntax was used. (Bug #28705373)
* The check for partitioned tables in shared tablespaces in
the upgrade checker utility provided by MySQL Shell (the
util.checkForServerUpgrade() operation) did not return
correct results for the 8.0.11 and 8.0.12 target
versions. The check now uses alternative Information
Schema tables that are populated with the required
information in these versions. (Bug #28701423)
* The default value for group_replication_exit_state_action
is ABORT_SERVER, but AdminAPI now overrides this and sets
the default on instances to READ_ONLY. This ensures that
instances which leave the group unexpectedly continue
running and can be rejoined to the cluster.
(Bug #28701263)
* The MySQL Shell command \option ignored additional
arguments separated by spaces that were specified for an
option after the initial value. (Bug #28658632)
* MySQL Shell permitted newline characters (line feed and
carriage return) in passwords to be passed to a Secret
Store Helper using the shell.storeCredential method,
resulting in an error in the Secret Store Helper. MySQL
Shell now returns an exception if newline characters are
used in supplied passwords for the shell.storeCredential
method, and does not pass them to the Secret Store
Helper. (Bug #28597766)
* On the Windows platform, UTF-8 encoded strings were
printed to the console using the cout object, which
transfers a byte at a time. This resulted in multi-byte
Unicode characters, such as a single quotation mark,
being displayed and handled incorrectly. MySQL Shell now
uses alternative functions for printing, and verifies
that multi-byte UTF-8 characters are emitted as a
complete unit. (Bug #28596692)
* When executing an SQL script in MySQL Shell, an
inaccurate line number was reported for the location of
syntax errors in the script. The number referenced the
current SQL block rather than the line number in the
script. The error message now uses the global line
number. (Bug #28545982)
* The SQL statement splitting logic in MySQL Shell has been
refactored to fix a number of issues and to match
behaviors of the MySQL command-line tool mysql:
+ The backslash character (\) is no longer accepted in
the delimiter string.
+ The use of the word "delimiter" in contexts other
than as a command is now handled correctly.
+ In scripts, comments are not discarded, and groups
of comments and statements are now split in the same
way as mysql would split them.
+ Large scripts can now be successfully split into
incremental chunks even when some tokens span across
more than one chunk.
+ Scripts can now be parsed in the ANSI_QUOTES SQL
mode.
+ Multi-line strings and comments that contain quotes
are now parsed correctly.
+ Inline commands are handled in the same way as by
mysql, as follows:
o A \ character appearing at the beginning of a
statement is interpreted as the start of a
multi-letter MySQL Shell command.
o A \ character appearing within a statement is
interpreted as the start of a single-letter
command. The command is executed immediately,
then stripped out of the input statement.
o A \ character appearing after the end of a
statement is interpreted as the start of a
single-letter command.
(Bug #27959016, Bug #25689071)
* When a cluster was created on a server that did not have
the X Plugin enabled, a silent assumption was being made
about the X Protocol port value. Now the value of an X
Protocol port is only stored for instances on which X
Plugin is enabled. (Bug #27677227)
* The handling of Windows named pipe connections by MySQL
Shell has been improved and systematized. Now, if you
specify the host name as a period (.) on Windows, MySQL
Shell connects using a named pipe.
+ If you are connecting using a URI type string,
specify user@.
+ If you are connecting using a data dictionary,
specify {"host": "."}
+ If you are connecting using individual parameters,
specify --host=. or -h .
By default, the pipe name MySQL is used. You can specify
an alternative named pipe using the --socket option or as
part of the URI type string. If a URI type string is
used, the named pipe must be prepended with the
characters \\.\ as well as being either encoded using
percent encoding or surrounded with parentheses, as shown
in the following examples:
(\\.\named:pipe)
\\.\named%3Apipe
(Bug #27381738)
* The dba.checkInstanceConfiguration() operation was not
checking if the Performance Schema was enabled on the
target instance. This could result in a situation where
you could create a cluster but could not run several
management operations on it, for example the
Cluster.status() operation. Now,
dba.checkInstanceConfiguration() checks that the
Performance Schema is enabled on instances.
(Bug #25867733)
* When JSON format output was enabled for MySQL Shell, the
properties of the Shell API Options class (shell.options)
and AdminAPI Cluster class (dba.getCluster) were not
printed, only the class name. (Bug #25027181)
* When Cluster.checkInstanceState() was executed on an
instance which was already a member of the current
cluster, the output indicated that the instance was fully
recoverable. This was misleading and was caused by a
missing validation to ensure the instance does not belong
to a cluster. (Bug #24942875)
* The dba.checkInstanceConfiguration() operation did not
recognize privileges when they were associated to a user
through a role (available in MySQL server 8.0 and
higher). In such a case, a missing privileges error was
being incorrectly issued despite the user possessing all
the required privileges. Now users with their privileges
assigned by roles are recognized by AdminAPI operations
correctly. (Bug #91394, Bug #28236922)
