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Merge pull request #249 from jbodah/patch-3

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thank you!
This commit is contained in:
Shlomi Noach 2016-09-28 21:51:08 +02:00 committed by GitHub
commit de2513b465
1 changed files with 2 additions and 2 deletions
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doc/testing-on-replica.md
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@ -49,12 +49,12 @@ It's your job to:
Simple:
```shell
$ gh-osc --host=myhost.com --conf=/etc/gh-ost.cnf --database=test --table=sample_table --alter="engine=innodb" --chunk-size=2000 --max-load=Threads_connected=20 --initially-drop-ghost-table --initially-drop-old-table --test-on-replica --verbose --execute
$ gh-ost --host=myhost.com --conf=/etc/gh-ost.cnf --database=test --table=sample_table --alter="engine=innodb" --chunk-size=2000 --max-load=Threads_connected=20 --initially-drop-ghost-table --initially-drop-old-table --test-on-replica --verbose --execute
```
Elaborate:
```shell
$ gh-osc --host=myhost.com --conf=/etc/gh-ost.cnf --database=test --table=sample_table --alter="engine=innodb" --chunk-size=2000 --max-load=Threads_connected=20 --switch-to-rbr --initially-drop-ghost-table --initially-drop-old-table --test-on-replica --postpone-cut-over-flag-file=/tmp/ghost-postpone.flag --exact-rowcount --concurrent-rowcount --allow-nullable-unique-key --verbose --execute
$ gh-ost --host=myhost.com --conf=/etc/gh-ost.cnf --database=test --table=sample_table --alter="engine=innodb" --chunk-size=2000 --max-load=Threads_connected=20 --switch-to-rbr --initially-drop-ghost-table --initially-drop-old-table --test-on-replica --postpone-cut-over-flag-file=/tmp/ghost-postpone.flag --exact-rowcount --concurrent-rowcount --allow-nullable-unique-key --verbose --execute
```
- Count exact number of rows (makes ETA estimation very good). This goes at the expense of paying the time for issuing a `SELECT COUNT(*)` on your table. We use this lovingly.
- Automatically switch to `RBR` if replica is configured as `SBR`. See also: [migrating with SBR](migrating-with-sbr.md)