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Document risk of breaking replication if master-slave schemas or table structs differ.

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Daniel Nichter
2012-03-30 10:02:37 -06:00
parent 02a83b71fa
commit 8dc348baa1
1 changed files with 5 additions and 0 deletions
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bin/pt-table-checksum
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@@ -7451,6 +7451,11 @@ contains checksum results. It has checks that, if disabled, can potentially
cause replication to fail when unsafe replication options are used. In short, cause replication to fail when unsafe replication options are used. In short,
it is safe by default, but it permits you to turn off its safety checks. it is safe by default, but it permits you to turn off its safety checks.
The tool presumes that schemas and tables are identical on the master and
all replicas. Replication will break if, for example, a replica does not
have a schema that exists on the master (and that schema is checksummed),
or if the structure of a table on a replica is different than on the master.
At the time of this release, we know of no bugs that could cause harm to At the time of this release, we know of no bugs that could cause harm to
users. users.