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179 Commits

Author SHA1 Message Date
Shlomi Noach
3dc4930ae3
Merge branch 'master' into support-aliyun-rds 2018-04-16 14:17:03 +03:00
zj118228
d3b98d9e74 Refactor the code and remove the global variable of 
support-aliyun-rds branch.
 2018-03-29 12:20:41 +08:00
Kurt Kotzur
117b197b2a
Obey defaultNumRetries in retryOperationWithExponentialBackoff; name max interval flag more generically (#2) 
* rename flags, obey defaultNumRetries

* capitalization fixes

* fix flag description typo

* fix sleep algorithm
 2018-03-19 12:26:46 -07:00
Kurt Kotzur
628983f78f
🎨 2018-03-16 12:42:38 -07:00
Kurt Kotzur
64f66c4abb
add back nonFatalHint, fix type mismatches 2018-03-16 10:54:37 -07:00
Kurt Kotzur
3f0443833d
add flags for enabling exponential backoff and maximum backoff interval 2018-03-15 17:40:15 -07:00
zj118228
6f3d54a136 Aliyun RDS hide some mysql variables for secrity so gh-ost will get 
ilegal values. Add --aliyun-rds flag to avoid getting them.
 2018-01-23 14:44:22 +08:00
Nikhil Mathew
ec6ceffbcb Pass in a migrationContext UUID for a migration specific connections cache 2017-12-14 15:53:29 -08:00
Shlomi Noach
7ef284a3ad removed redundant CanStopStreaming func 2017-12-11 08:02:32 +02:00
Nikhil Mathew
2ad65ee1d7 Refactor usages of GetDB to use mysql 2017-11-10 15:44:22 -08:00
Nikhil Mathew
338a439c91 Remove GetDB from MigrationContext 2017-11-10 15:40:50 -08:00
Nikhil Mathew
f06e23282e Merge branch 'master' into nm-refactor-migration-context 2017-10-02 10:31:57 -07:00
Nikhil Mathew
84bdfdb1ad Cache DB connection pools on the migrationContext where applicable 2017-09-22 16:06:06 -07:00
Shlomi Noach
6362dbe51a Clearer error message on config file read error 2017-09-10 08:20:01 +03:00
Nikhil Mathew
982b8eede9 Refactor global migration context 2017-08-08 13:36:54 -07:00
Arthur Neves
843c74f960
Add a force-table-names command flag 
usage example:
```
gh-ost  ...  --force-table-names=migration_tbl
```

The force-table-names flag will receive a table name and use that name
when creating the _del, _gho, _ghc tables.
For instance for that example above, the tables would be:

_migration_tbl_del
_migration_tbl_gho
_migration_tbl_ghc

[fixes #399]
 2017-07-21 15:37:57 -04:00
Shlomi Noach
e2c14f5aba Merge branch 'master' into dynamic-dml-batch-size 2017-07-20 16:47:22 +03:00
Shlomi Noach
6da0b8af3d Dynamic DML batch size; apadting buffer size to match 2017-07-19 16:44:18 +03:00
Shlomi Noach
168676bd9d ghost/changelog/del table names support max characters limit 2017-07-19 15:14:03 +03:00
Shlomi Noach
095863b774 dml-batch-size capped at 1000 2017-07-04 08:50:25 +03:00
Shlomi Noach
e8b384e43c supporting greater batch size 2017-06-28 19:35:55 +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
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
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
23ce390d69 supporting throttle-http 2017-03-26 13:10:34 +03:00
Shlomi Noach
8db8e127eb supporting --timestamp-old-table 2017-02-21 10:34:24 -07:00
Shlomi Noach
b289041ccb Merge branch 'master' into fix-reappearing-throttled-reasons 2017-02-08 13:11:34 +02:00
Shlomi Noach
ed5dd7f049 Collecting and presenting MySQL versions of applier and inspector 2017-02-07 09:41:33 +02:00
Shlomi Noach
baee4f69f9 fixing phantom throttle-control-replicas lag result 2017-01-29 10:18:39 +02:00
Shlomi Noach
220bf83a5b Merge branch 'master' into batch-apply-dml-events 2017-01-04 08:37:08 +02:00
Shlomi Noach
445c67635d batching DML writes, configurable --dml-batch-size 2017-01-03 14:31:19 +02:00
Shlomi Noach
9177f7553f Merge branch 'master' into heartbeat-control-replicas-unified 2016-12-30 08:07:07 +02:00
Cyprian Nosek
2bfc672b03 Add possibility to set serverId as gh-ost argument 
Signed-off-by: Cyprian Nosek <cyprian.nosek@pearson.com>
 2016-12-28 11:49:41 +01:00
Shlomi Noach
c66356bd05 --replication-lag-query is deprecated. 2016-12-26 21:38:37 +02:00
Shlomi Noach
ba2a9d9e55 support for --master-user and --master-password 2016-12-13 16:09:34 +01:00
Shlomi Noach
7126b28169 support for --skip-foreign-key-checks 2016-11-21 09:18:40 +01:00
Shlomi Noach
7ab6af8f5f never throttling inside cut-over critical section 2016-11-17 17:22:13 +01:00
Shlomi Noach
034683f482 Merge branch 'master' into close-streamer-connection 2016-11-01 12:22:21 +01:00
Shlomi Noach
7fa5e405d4 avoid writing heartbeat when throttle commanded by user 
when throttling on user command there really is no need for injecting heartbeat. The user commanded, therefore gh-ost complies and trusts the reasoning for throttling. What this will allow is complete quiet time. This, in turn, will allow such features as relocating via orchestrator/pseudo-gtid at time of throttling
 2016-10-27 14:51:38 +02:00
Shlomi Noach
7b63b4a275 proper cleanup of streamer connection 2016-10-27 13:52:37 +02:00
Shlomi Noach
bf92eec214 validating table structure on applier and migrator 
- reading column list on applier
- comparing original table on applier and migrator, expecting exact column list
- or else bailing out
 2016-10-20 11:29:30 +02:00
Shlomi Noach
f988309800 no need for Inspector timezone; it is irrelevant 2016-10-13 13:08:23 +02:00
Shlomi Noach
184643157b Merge branch 'master' into tz-a-different-approach 2016-10-12 08:33:19 +02:00
Shlomi Noach
c11c611755 Merge pull request #260 from github/hooks-nil-check 
safe access to applier/inspector hostnames for hooks
 2016-10-12 08:16:50 +02:00
Shlomi Noach
4d903d0119 Merge pull request #264 from github/discard-foreign-keys 
Discard foreign keys
 2016-10-12 08:16:27 +02:00
Shlomi Noach
5d92da4a74 Merge branch 'master' into tz-a-different-approach 2016-10-11 17:17:42 +02:00
Shlomi Noach
dbf50afbc7 reading time_zone settings for Inspector and Applier separately. 
--time-zone overrides both of them, if given
 2016-10-11 16:00:26 +02:00
Shlomi Noach
15f4ddfd8a support for --critical-load-interval-millis 
this optional flag gives --critical-load a second chance. When configured to positive value, meeting with critical-load spawns a timer. When this timer expires a second check for critical-load is made; if still met, gh-ost bails out.
By default the interval is zero, in which case gh-ost bails out immediately on meeting critical load.
 2016-10-10 13:21:01 +02:00
Shlomi Noach
6750959e1a configurable time-zone, native time parsing 2016-10-10 11:39:57 +02:00
Shlomi Noach
1f65473e69 support for --discard-foreign-keys 
This flag makes migration silently and happily discard any existing foreign keys on migrated table. This is useful for intentional dropping of foreign keys, as gh-ost does not otherwise have support for foreign key migration.
At some time in the future gh-ost may support foreign key migration, at which time this flag will be removed
 2016-10-07 10:20:50 +02:00
Shlomi Noach
72f63d3042 safe access to applier/inspector hostnames for hooks 2016-10-04 21:18:44 +02:00
Shlomi Noach
e5e0444cc6 supporting --force-named-cut-over 
- when given, user _must_ specify table name
  and of course table name must match migrated table
 2016-09-12 19:17:36 +02:00
Shlomi Noach
1c6f828091 refactored server command into server.go 
- added support for cut-over=<tablename>
- refactored more code into context
 2016-09-12 12:38:14 +02:00
Shlomi Noach
88f2af8111 support for --assume-master-host, master-master/tungsten 2016-09-02 13:09:18 +02:00
randall
82110fcfcf Add -override-applier-host for use with -allow-master-master 
for configurations where writes are meant to go to one master, but gh-ost can't automatically determine which
 2016-09-01 20:29:26 -07:00
Shlomi Noach
b2c71931c6 refactored all throttling code into throttler.so 2016-08-30 12:25:45 +02:00
Shlomi Noach
23357d0643 WIP: decoupling general throttling from throttle logic 2016-08-30 11:32:17 +02:00
Shlomi Noach
75b2542f26 Merge branch 'master' into reduce-minimum-max-lag 2016-08-30 09:47:33 +02:00
Shlomi Noach
2afb86b9e4 support for millisecond throttling 
- `--max-lag-millis` is at least `100ms`
- `--heartbeat-interval-millis` introduced; defaults `500ms`, can range `100ms` - `1s`
- Control replicas lag calculated asynchronously to throttle test
  - aggressive when `max-lag-millis < 1000` and when `replication-lag-query` is given
 2016-08-30 09:41:59 +02:00
Jonah Berquist
10b222bc7b Reduce minimum maxLagMillisecondsThrottleThreshold to 100ms 2016-08-26 16:44:40 -07:00
Shlomi Noach
c70f405d06 Merge branch 'master' into hooks 2016-08-26 08:39:02 +02:00
Shlomi Noach
fad6743150 added hooks hint message 2016-08-25 13:54:42 +02:00
Shlomi Noach
cb1a7e2805 merged master 2016-08-25 12:32:03 +02:00
Shlomi Noach
1773f338c2 keeping track of delta rows 
on concurrent count(*) this means we re-apply delta onto new estimate
 2016-08-24 12:16:34 +02:00
Shlomi Noach
553f4c8d13 concurrent row-count 2016-08-24 11:39:44 +02:00
Shlomi Noach
56fd82a824 Merge pull request #174 from Wattpad/test-on-replica-manual-replication-control 
outstanding. Thank you!
 2016-08-24 09:12:21 +02:00
Shlomi Noach
1c2a77ef95 hook names; added on-stop-replication hook 2016-08-23 11:35:48 +02:00
Shlomi Noach
6acbe7e3ae detecting and executing hooks 2016-08-20 08:24:20 +02:00
Paulo Bittencourt
2e43718ef3 Add --test-on-replica-skip-replica-stop flag 2016-08-19 17:34:08 -04:00
Paulo Bittencourt
a62f9e0754 Add --test-on-replica-manual-replication-control flag 
This will wait indefinitely for the replication status to change.
This allows us to run test schema changes in RDS without needing
custom RDS commands in gh-ost.
 2016-08-18 11:53:25 -04:00
Shlomi Noach
00369d7e5d relaxed config scanner mode 
- does not fail on MySQL 'prompt' config
 2016-08-18 13:58:38 +02:00
Shlomi Noach
ac0b788153 rename trust-rbr to assume-rbr 2016-08-15 11:05:51 +02:00
Shlomi Noach
1995be2b3f accepting --trust-rbr 
- avoiding need to restart replication
- in turn avoiding need for SUPER
 2016-08-12 14:26:58 +02:00
Damian Gryski
e02a49449e all: use time.Since() instead of time.Now().Sub 
Patch created with:
    gofmt -w -r 'time.Now().Sub(a) -> time.Since(a)' .
 2016-08-02 08:38:56 -04:00
Shlomi Noach
46bbea2a32 ETA counting rows, fixed copy time on count 2016-07-29 10:40:23 +02:00
Shlomi Noach
be8a023350 nice-ratio is now float64 2016-07-28 14:37:17 +02:00
Shlomi Noach
b53ee24a1f dynamic replication-lag-query 2016-07-26 14:14:25 +02:00
Shlomi Noach
6dbf5c31a2 resolved conflict 2016-07-26 11:57:01 +02:00
Shlomi Noach
4774b67ffd config file supports environment variables 2016-07-25 15:46:37 +02:00
Shlomi Noach
74804559c8 supporting --initially-drop-socket-file 
- by default gh-ost will not delete an existing socket file
  and thus, will fail running if socket file exists. This is the desired behavior.
- The flag --initially-drop-socket-file indicates we take responsibility and wish gh-ost to delete this file on startup
 2016-07-22 17:34:18 +02:00
Shlomi Noach
ef59a866d8 Removed legacy 'safe cut-over' 
Now that we have the atomic cut-over, the former is redundant
 2016-07-16 08:12:19 -06:00
Shlomi Noach
8e46b4ceea max-lag-millis is dynamicly controllable 2016-07-13 09:44:00 +02:00
Shlomi Noach
8217536898 supporting --cut-over-lock-timeout-seconds 2016-07-08 10:14:58 +02:00
Shlomi Noach
c116d84acb added nice-ratio 2016-07-04 14:29:09 +02:00
Shlomi Noach
0191b2897d an atomic cut-over implementation, as per issue #82 2016-06-27 11:08:06 +02:00
Shlomi Noach
690e046c51 adding --allow-master-master 2016-06-22 10:38:13 +02:00
Shlomi Noach
96e8419a35 Solved cut-over stall; change of table names 
- Cutover would stall after `lock tables` wait-timeout due do waiting on a channel that would never be written to. This has been identified, reproduced, fixed, confirmed.
- Change of table names. Heres the story:
  - Because were testing this even while `pt-online-schema-change` is being used in production, the `_tbl_old` naming convention makes for a collision.
  - "old" table name is now `_tbl_del`, "del" standing for "delete"
  - ghost table name is now `_tbl_gho`
  - when issuing `--test-on-replica`, we keep the ghost table around, and were also briefly renaming original table to "old". Well this collides with a potentially existing "old" table on master (one that hasnt been dropped yet).
  `--test-on-replica` uses `_tbl_ght` (ghost-test)
  - similar problem with `--execute-on-replica`, and in this case the table doesnt stick around; calling it `_tbl_ghr` (ghost-replica)
  - changelog table is now `_tbl_ghc` (ghost-changelog)
  - To clarify, I dont want to go down the path of creating "old" tables with 2 or 3 or 4 or 5 or infinite leading underscored. I think this is very confusing and actually not operations friendly. Its OK that the migration will fail saying "hey, you ALREADY have an old table here, why dont you take care of it first", rather than create _yet_another_ `____tbl_old` table. Were always confused on which table it actually is that gets migrated, which is safe to `drop`, etc.
- just after rowcopy completing, just before cutover, during cutover: marking as point in time _of interest_ so as to increase logging frequency.
 2016-06-21 12:56:01 +02:00
Shlomi Noach
80fcc05eb5 supporting interactive command throttle-control-replicas 2016-06-20 12:09:04 +02:00
Shlomi Noach
62b8a897e3 Retries, better visibility, documentation 
- Rowcopy time is bounded by copy end-time
- Retries are configurable via `--default-retries` (default: `60`)
- `migrator` notes the hostname
- `applier` and `inspector` note `impliedKey` (`@@hostname` and `@@port`)
- Added lots of code comments
- Adding documentation for "triggerless design"
 2016-06-19 17:55:37 +02:00
Shlomi Noach
23cb8ea7e9 Throttling & critical load 
- Added `--throttle-query` param (when returns > 0, throttling applies)
- Added `--critical-load`, similar to `--max-load` but implies panic and quit
- Recoded *-load as `LoadMap`
- More info on *-load throttle/panic
- `printStatus()` now gets printing heuristic. Always shows up on interactive `"status"`
- Fixed `change column` (aka rename) handling with quotes
- Removed legacy `mysqlbinlog` parser code
- Added tests
 2016-06-18 21:12:07 +02:00
Shlomi Noach
94f311ec7b supporting --panic-flag-file; when it exists - app panics and exits without cleanup 2016-06-17 11:40:08 +02:00
Shlomi Noach
836d0fe119 Supporting column rename 
- Parsing `alter` statement to catch `change old_name new_name ...` statements
- Auto deducing renamed columns
- When suspecting renamed columns, requesting explicit `--approve-renamed-columns` or `--skip-renamed-columns`
- updated tests
 2016-06-17 08:03:18 +02:00
Shlomi Noach
7d0ec9c9dc added --migrate-on-replica flag; runs complete migration on replica 2016-06-15 12:18:59 +02:00
Shlomi Noach
97adbf1ff8 - --cut-over no longer mandatory; default to safe 
- Removed `CutOverVoluntaryLock` and associated code
- Removed `CutOverUdfWait`
- `RenameTablesRollback()` first attempts an atomic swap
 2016-06-14 09:01:06 +02:00
Shlomi Noach
cb1c61ac47 - --cut-over no longer mandatory; default to safe 
- Removed `CutOverVoluntaryLock` and associated code
- Removed `CutOverUdfWait`
- `RenameTablesRollback()` first attempts an atomic swap
 2016-06-14 09:00:56 +02:00
Shlomi Noach
e4ed801df5 noting posponing status 2016-06-13 18:36:29 +02:00
Shlomi Noach
b8c7e046a1 test-on-replica to invoke cut-over swap 2016-06-10 11:15:11 +02:00
Shlomi Noach
087d1dd64d suuporting dynamic reconfiguration of max-load 2016-06-09 11:25:01 +02:00