September 2014
Intermediate to advanced
384 pages
9h 28m
English
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Checking the replication for errors
Calculating checksums is the best way to be sure that a server and a slave contain exactly the same data as the server. This check can be used in two situations:
- After loading data into a slave, to be sure that everything worked properly
- On running servers, on a regular basis, or when we suspect that a replication error happened
The second case is more complicated, because during the normal execution slaves can lag behind their masters. However, a tool explained next is able to perform this check automatically, by waiting until slaves reach a certain binary log event.
There are at least three methods to do this:
- Using the
CHECKSUM TABLEstatement - Using the Percona
pt-table-checksumtool - Calculating a checksum of the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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