octoleo/gh-ost
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
919 Commits 51 Branches 51 Tags 24 MiB
10d1952dc6
Commit Graph

283 Commits

Author SHA1 Message Date
Shlomi Noach
087a6cc0cb Merge branch 'master' into touch-postpone-flag-file 2017-10-17 16:02:11 +03:00
Shlomi Noach
aff7413624 clearer error message when not able to create postpone-cut-over-flag-file 2017-10-02 16:00:58 +03:00
Shlomi Noach
c2186db527 Merge branch 'master' into touch-postpone-flag-file 2017-10-02 15:55:21 +03:00
Shlomi Noach
9890e66755 Merge pull request #491 from zmoazeni/enable-extra-port 
Allow gh-ost to modify the server using extra port
 2017-10-02 14:26:59 +03:00
dcadevil
351bfe1a24 Correct spelling for initiateStreaming() comment. 2017-09-21 11:36:27 +08:00
Zach Moazeni
df27c5b76f Allow gh-ost to modify the server using extra port 
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
```
 2017-09-20 16:05:20 -04:00
Shlomi Noach
78c1e0432f Merge branch 'master' into checking-thresholds 2017-09-06 08:07:35 +03:00
Shlomi Noach
e2171e0162 Validating password length 2017-09-03 10:27:04 +03:00
Shlomi Noach
3437cf44c4 Validating shared key column types 2017-09-03 09:57:26 +03:00
Christian Joudrey
2646a0a997
Remove unused acceptSignals in migrator 2017-09-02 21:59:09 -04:00
Shlomi Noach
c9f2da82f0 Merge branch 'master' into json-57-test 2017-08-27 08:01:02 +03:00
Shlomi Noach
2174588ebf Supporting JSON types 2017-08-22 11:51:20 +03:00
Shlomi Noach
79e4f1cdbe detect range end based on OFFSET 2017-08-21 08:12:41 +03:00
Shlomi Noach
de0ebcbbb0 documentation 2017-07-19 16:48:22 +03:00
Shlomi Noach
6da0b8af3d Dynamic DML batch size; apadting buffer size to match 2017-07-19 16:44:18 +03:00
Shlomi Noach
4a3a5a1ce1 Merge branch 'master' into case-insensitive-columns 2017-07-16 06:51:39 +03:00
Shlomi Noach
effae08fbf supporting change of column name-case 2017-07-12 12:33:32 +03:00
Shlomi Noach
e6dd2c90d2 responding to errors in rowcopy 2017-07-11 13:39:11 +03:00
Shlomi Noach
a8932ee1b8 freno-aware http-throttler 2017-07-04 10:28:09 +03:00
Shlomi Noach
36bcc031ce Merge branch 'master' into fix-variables-spelling 2017-06-29 20:53:49 +03:00
Shlomi Noach
cb3c7f3e20 Merge branch 'master' into touch-postpone-flag-file 2017-06-11 08:57:45 +03:00
Shlomi Noach
8da0f60582 fixed critical-load check for hibernation 2017-05-24 10:53:00 +03:00
Shlomi Noach
ad47f7c147 throttling just prior to leaving hibernation, so as to allow re-throttle checks to apply 2017-05-24 10:42:47 +03:00
Shlomi Noach
3955a6d67f hibernate on critical-load 2017-05-24 08:32:13 +03:00
Shlomi Noach
aca288e88d -postpone-cut-over-flag-file implies touching indicated file 2017-05-07 14:58:18 +03:00
Shlomi Noach
eaa3489fe0 Merge branch 'master' into server-report-coordinates 2017-05-01 07:50:13 +03:00
Shlomi Noach
79cee99f57 support for 'coordinates' command 2017-04-28 15:50:51 -07:00
Jacob Bednarz
0243e76b33
s/applyEnvironmentVairables/applyEnvironmentVariables 2017-04-24 07:45:21 +10:00
Shlomi Noach
e2a6b857d0 Merge branch 'master' into drop-add-same-column 2017-04-23 20:26:31 +03:00
Shlomi Noach
8a0f1413eb dropped columns are not 'shared' and no data copy attempted for such columns 2017-04-23 08:38:35 +03:00
Shlomi Noach
3092e9c5c0 error and nil checks on socket connection 2017-04-13 08:27:42 +03:00
Shlomi Noach
c413d508cc HEAD instead of GET 2017-03-26 13:12:56 +03:00
Shlomi Noach
23ce390d69 supporting throttle-http 2017-03-26 13:10:34 +03:00
Shlomi Noach
7517238bd3 Merge branch 'master' into fix-infinite-cutover-loop 2017-03-06 21:50:26 +02:00
Shlomi Noach
91521f9357 Merge branch 'master' into old-table-name-timestamp 2017-03-05 18:10:14 +02:00
Shlomi Noach
f11f6f978f mitigating cut-over/write race condition 2017-02-24 14:48:10 -07:00
Shlomi Noach
06c909bd10 Validating table name length 2017-02-21 17:34:49 -07:00
Shlomi Noach
289ce46a2b Merge branch 'master' into fix-infinite-cutover-loop 2017-02-16 14:16:32 +02:00
Shlomi Noach
b289041ccb Merge branch 'master' into fix-reappearing-throttled-reasons 2017-02-08 13:11:34 +02:00
Shlomi Noach
6ecf7cc0ee Auto-merged master into interactive-command-question on deployment 2017-02-08 13:03:45 +02:00
Shlomi Noach
10edf3c063 Migration only starting after first replication lag metric collected 2017-02-07 12:13:19 +02:00
Shlomi Noach
91a3fd4a84 Merge branch 'master' into which-mysql-versions 2017-02-07 11:12:48 +02:00
Shlomi Noach
ed5dd7f049 Collecting and presenting MySQL versions of applier and inspector 2017-02-07 09:41:33 +02:00
Shlomi Noach
6fa32f6d54 cut-over failure on test-on-replica starts replication again 2017-02-07 09:31:52 +02:00
Shlomi Noach
9d47992d7e testing/running on replica: gets lags via SHOW SLAVE STATUS 2017-02-02 11:18:07 +02:00
Shlomi Noach
baee4f69f9 fixing phantom throttle-control-replicas lag result 2017-01-29 10:18:39 +02:00
Shlomi Noach
be1ab175c7 status presents with '# throttle-control-replicas count:' 2017-01-29 09:56:25 +02:00
Shlomi Noach
779e9fdd83 question (?) as argument in interactive commands 2017-01-29 09:25:29 +02:00
Shlomi Noach
a07a6f8cf5 fixing mediumint unsigned problem 2017-01-10 09:57:42 +02:00
Shlomi Noach
f7d2beb4d2 handling a non-DML event at the end of a dml-event sequence 2017-01-05 08:13:51 +02:00