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adding documentation

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Shlomi Noach 2016-05-20 16:35:52 +02:00
parent a9d4c11aa1
commit 8102c90ee2
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doc/testing-on-replica.md
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@ -9,7 +9,8 @@ Test on replica if you:
## What testing on replica means ## What testing on replica means
`gh-ost` will make all changes TL;DR `gh-ost` will make all changes on a replica and leave both original and ghost tables for you to compare.
## Issuing a test drive ## Issuing a test drive
Apply `--test-on-replica --host=<a.replica>`. Apply `--test-on-replica --host=<a.replica>`.
@ -36,7 +37,6 @@ You now have the time to verify the tool works correctly. You may checksum the e
- or of course only select the shared columns before/after the migration - or of course only select the shared columns before/after the migration
- We use the trivial `engine=innodb` for `alter` when testing. This way the resulting ghost table is identical in structure to the original table (including indexes) and we expect data to be completely identical. We use `md5sum` on the entire dataset to confirm the test result. - We use the trivial `engine=innodb` for `alter` when testing. This way the resulting ghost table is identical in structure to the original table (including indexes) and we expect data to be completely identical. We use `md5sum` on the entire dataset to confirm the test result.
### Cleanup ### Cleanup
It's your job to: It's your job to: