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Note in --tries when/why certain ops are affected. Re-alphabetize the options.

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Daniel Nichter
2013-03-05 16:33:38 -07:00
parent c1f3e130b1
commit 627b4fab70
1 changed files with 65 additions and 61 deletions
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126
bin/pt-online-schema-change
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@@ -10466,13 +10466,6 @@ STDOUT to utf8, passes the mysql_enable_utf8 option to DBD::mysql, and runs SET
NAMES UTF8 after connecting to MySQL. Any other value sets binmode on STDOUT NAMES UTF8 after connecting to MySQL. Any other value sets binmode on STDOUT
without the utf8 layer, and runs SET NAMES after connecting to MySQL. without the utf8 layer, and runs SET NAMES after connecting to MySQL.
=item --check-interval
type: time; default: 1
Sleep time between checks for L<"--max-lag">.
=item --[no]check-alter =item --[no]check-alter
default: yes default: yes
@@ -10504,6 +10497,12 @@ L<"--print"> and verify that the triggers are correct.
=back =back
=item --check-interval
type: time; default: 1
Sleep time between checks for L<"--max-lag">.
=item --[no]check-plan =item --[no]check-plan
default: yes default: yes
@@ -10884,60 +10883,6 @@ replication lag, insert the values C<h=10.10.1.16> and C<h=10.10.1.17> into the
table. Currently, the DSNs are ordered by id, but id and parent_id are otherwise table. Currently, the DSNs are ordered by id, but id and parent_id are otherwise
ignored. ignored.
=item --tries
type: array
How many times to try critical operations. If certain operations fail due
to non-fatal, recoverable errors, the tool waits and tries the operation
again. These are the operations that are retried, with their default number
of tries and wait time between tries (in seconds):
=for comment ignore-pt-internal-value
MAGIC_tries
OPERATION TRIES WAIT
=================== ===== ====
create_triggers 10 1
drop_triggers 10 1
copy_rows 10 0.25
swap_tables 10 1
update_foreign_keys 10 1
To change the defaults, specify the new values like:
--tries create_triggers:5:0.5,drop_triggers:5:0.5
That makes the tool try C<create_triggers> and C<drop_triggers> 2 times
with a 0.5 second wait between tries. So the format is:
operation:tries:wait[,operation:tries:wait]
All three values must be specified.
For creating and dropping triggers, the number of tries applies to each
C<CREATE TRIGGER> and C<DROP TRIGGER> statement for each trigger.
For copying rows, the number of tries applies to each chunk, not the
entire table. For swapping tables, the number of tries usually applies
once because there is usually only one C<RENAME TABLE> statement.
For rebuilding foreign key constraints, the number of tries applies to
each statement (C<ALTER> statements for the C<rebuild_constraints>
L<"--alter-foreign-keys-method">; other statements for the C<drop_swap>
method).
The tool retries each operation if these errors occur:
Lock wait timeout (innodb_lock_wait_timeout and lock_wait_timeout)
Deadlock found
Query is killed (KILL QUERY <thread_id>)
Connection is killed (KILL CONNECTION <thread_id>)
Lost connection to MySQL
In the case of lost and killed connections, the tool will automatically
reconnect.
Failures and retries are recorded in the L<"--statistics">.
=item --set-vars =item --set-vars
type: Array type: Array
@@ -10979,6 +10924,65 @@ online schema change process by making the table with the new schema take the
place of the original table. The original table becomes the "old table," and place of the original table. The original table becomes the "old table," and
the tool drops it unless you disable L<"--[no]drop-old-table">. the tool drops it unless you disable L<"--[no]drop-old-table">.
=item --tries
type: array
How many times to try critical operations. If certain operations fail due
to non-fatal, recoverable errors, the tool waits and tries the operation
again. These are the operations that are retried, with their default number
of tries and wait time between tries (in seconds):
=for comment ignore-pt-internal-value
MAGIC_tries
OPERATION TRIES WAIT
=================== ===== ====
create_triggers 10 1
drop_triggers 10 1
copy_rows 10 0.25
swap_tables 10 1
update_foreign_keys 10 1
To change the defaults, specify the new values like:
--tries create_triggers:5:0.5,drop_triggers:5:0.5
That makes the tool try C<create_triggers> and C<drop_triggers> 2 times
with a 0.5 second wait between tries. So the format is:
operation:tries:wait[,operation:tries:wait]
All three values must be specified.
Note that most operations are affected only in MySQL 5.5 and newer by
C<lock_wait_timeout> (see L<"--set-vars">) because of metadata locks.
The C<copy_rows> operation is affected in any version of MySQL by
C<innodb_lock_wait_timeout>.
For creating and dropping triggers, the number of tries applies to each
C<CREATE TRIGGER> and C<DROP TRIGGER> statement for each trigger.
For copying rows, the number of tries applies to each chunk, not the
entire table. For swapping tables, the number of tries usually applies
once because there is usually only one C<RENAME TABLE> statement.
For rebuilding foreign key constraints, the number of tries applies to
each statement (C<ALTER> statements for the C<rebuild_constraints>
L<"--alter-foreign-keys-method">; other statements for the C<drop_swap>
method).
The tool retries each operation if these errors occur:
Lock wait timeout (innodb_lock_wait_timeout and lock_wait_timeout)
Deadlock found
Query is killed (KILL QUERY <thread_id>)
Connection is killed (KILL CONNECTION <thread_id>)
Lost connection to MySQL
In the case of lost and killed connections, the tool will automatically
reconnect.
Failures and retries are recorded in the L<"--statistics">.
=item --user =item --user
short form: -u; type: string short form: -u; type: string