octoleo/gh-ost
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d29993ffda
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285 Commits

Author SHA1 Message Date
Josh Soref
d29993ffda spelling: changelog 2017-11-08 00:45:19 +00:00
Josh Soref
4dda9cf930 spelling: aggressive 2017-11-08 00:44:30 +00:00
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