pt-table-checksum doesn't process float values on different MySQL versions

Bug #1130876 reported by Aleksandr Kuzminsky on 2013-02-20
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Percona Toolkit moved to

Bug Description

There is a float column in a table.

In version 5.0 it's represented as:
points_first: 1e+06

In 5.5 -
points_first: 1000000

Although the number is the same pt-table-checksums treats the values as different.

tags: added: float-precision pt-table-checksum
Changed in percona-toolkit:
status: New → Triaged
Brian Fraser (fraserbn) wrote :

Aleksandr, are you using --float-precision? If not, that's the solution for your problem. If yes and the problem is still there, could you attach the output of the tool while running with PTDEBUG=1?

Changed in percona-toolkit:
status: Triaged → Incomplete
Launchpad Janitor (janitor) wrote :

[Expired for Percona Toolkit because there has been no activity for 60 days.]

Changed in percona-toolkit:
status: Incomplete → Expired
joffrey92 (joffreymi) wrote :


the issue is for display, not really for precision.

Still in 2015, quite a lot of 5.0 (and older) are running production systems, and are finally being upgraded.

The patch proposed from :

Could be integrated, as an option maybe, to avoid false positives when comparing checksums between versions v5.0 and 5.5


Percona now uses JIRA for bug reports so this bug report is migrated to:

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