* v1.1.0
* WIP: copying AUTO_INCREMENT value to ghost table
Initial commit: towards setting up a test suite
Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>
* greping for 'expect_table_structure' content
* Adding simple test for 'expect_table_structure' scenario
* adding tests for AUTO_INCREMENT value after row deletes. Should initially fail
* clear event beforehand
* parsing AUTO_INCREMENT from alter query, reading AUTO_INCREMENT from original table, applying AUTO_INCREMENT value onto ghost table if applicable and user has not specified AUTO_INCREMENT in alter statement
* support GetUint64
Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>
* minor update to test
Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>
* adding test for user defined AUTO_INCREMENT statement
Co-authored-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>
Closes#822.
In https://github.com/go-sql-driver/mysql/issues/1075, @acharis notes
that the way the go-sql driver is written, query timeout errors don't
get set in `rows.Err()` until _after_ a call to `rows.Next()` is made.
Because this kind of error means there will be no rows in the result
set, the `for rows.Next()` will never enter the for loop, so we must
check the value of `rows.Err()` after the loop, and surface the error up
appropriately.
- Adding a command line option for users to enforce tls/ssl connections
for the applier, inspector, and binlog reader.
- The user can optionally request server certificate verification through
a command line option to specify the ca cert via a file path.
- Fixes an existing bug appending the timeout option to the singleton
applier connection.
Both Percona and Maria allow MySQL to be configured to listen on an extra port when their thread pool is enable.
* https://www.percona.com/doc/percona-server/5.7/performance/threadpool.html
* https://mariadb.com/kb/en/the-mariadb-library/thread-pool-in-mariadb-51-53/
This is valuable because if the table has a lot of traffic (read or write load), gh-ost can end up starving the thread pool as incomming connections are immediately blocked.
By using gh-ost on the extra port, MySQL locking will still behave the same, but MySQL will keep a dedicated thread for each gh-ost connection.
When doing this, it's important to inspect the extra-max-connections variable. Both Percona and Maria default to 1, so gh-ost may easily exceed with its threads.
An example local run using this
```
$ mysql -S /tmp/mysql_sandbox20393.sock -e "select @@global.port, @@global.extra_port"
+---------------+---------------------+
| @@global.port | @@global.extra_port |
+---------------+---------------------+
| 20393 | 30393 |
+---------------+---------------------+
./bin/gh-ost \
--initially-drop-ghost-table \
--initially-drop-old-table \
--assume-rbr \
--port="20395" \
--assume-master-host="127.0.0.1:30393" \
--max-load=Threads_running=25 \
--critical-load=Threads_running=1000 \
--chunk-size=1000 \
--max-lag-millis=1500 \
--user="gh-ost" \
--password="gh-ost" \
--database="test" \
--table="mytable" \
--verbose \
--alter="ADD mynewcol decimal(11,2) DEFAULT 0.0 NOT NULL" \
--exact-rowcount \
--concurrent-rowcount \
--default-retries=120 \
--panic-flag-file=/tmp/ghost.panic.flag \
--postpone-cut-over-flag-file=/tmp/ghost.postpone.flag \
--execute
```
