Commit Graph

18 Commits

Author SHA1 Message Date
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
9f56a84b57 Fixing single-row table migration
- `BuildUniqueKeyRangeEndPreparedQuery` supports `includeRangeStartValues` argument
- `applier` sends `this.migrationContext.GetIteration() == 0` as argument
2016-05-18 14:53:09 +02:00
Shlomi Noach
9d055dbda7 renaming to gh-ost 2016-05-16 11:09:17 +02:00
Shlomi Noach
eeffa701d6 - Added ok-to-drop-table flag
- Added `switch-to-rbr` flag; applying binlog format change if needed
- Using dedicated db instance for locking & renaming on applier (must be used from within same connection)
- Heartbeat now uses `time.RFC3339Nano`
- Swap tables works! Caveat: short table outage
- `--test-on-replica` works!
- retries: using `panicAbort`: from any goroutine, regardless of context, it is possible to terminate the operation
- Reintroduced changelog events listener on streamer. This is the correct implementation.
2016-04-18 10:57:18 -07:00
Shlomi Noach
a4ee80df13 - Building and applying queries from binlog event data!
- `INSERT`, `DELETE`, `UPDATE` statements
- support for `--noop`
- initial support for `--test-on-replica`. Verifying against `--allow-on-master`
- Changelog events no longer read from binlog stream, because reading it may be throttled, and we have to be able to keep reading the heartbeat and state events.
  They are now being read directly from table, mapping already-seen-events to avoid confusion
  Changlelog listener pools table in 2*frequency of heartbeat injection
2016-04-14 13:37:56 +02:00
Shlomi Noach
0d25d11b40 added types_test 2016-04-11 19:06:47 +02:00
Shlomi Noach
04525887f3 - Throttling-check is now an async routine running once per second
- Throttling variables protected by mutex
- Added `--throttle-additional-flag-file`: `operation pauses when this file exists; hint: keep default, use for throttling multiple gh-osc operations`
- ColumnList is not a `struct` which contains ordinal mapping
- More implicit write changelog + audit changelog
- builder now builds `DELETE` and `INSERT` queries from data it will eventually get from DML event
- Sanity check for binlog_row_image
- Restarting replication to be sure binlog settings apply
- Prepare for accepting `SIGHUP` (reloading configuration)
2016-04-11 17:27:16 +02:00
Shlomi Noach
a1a34b8150 ongoing development:
- accepts --max-load
- accepts multiple conditions in --max-load
- throttle includes reason
- chunk-size sanity check
- change log state writes both in appending (history) mode and in replacing (current) mode
- more atomic checks
- inspecting ghost table columns, unique key
- comparing unique keys between tables; sanity
- intersecting columns between tables
- prettify status
- refactored throttle() and retries()
2016-04-08 14:35:06 +02:00
Shlomi Noach
75f68c0752 - row copy and row events are now handled by a single routine which prioritizes events over rowcopy
- Supporting `--throttle-file-flag`
- Printing status
- Supporting transactional table syntax
- code cleanup; refactoring
- proper use of atomic where required
- iterations are in changelog (erm... maybe too much)
- `LOCK TABLES`, `UNLOCK TABLES` working
2016-04-08 10:34:44 +02:00
Shlomi Noach
0e7b23e6fe - Creating an populating Changelog table
- Using heartbeat
- Throttling works based on heartbeat
- Refactored binlog_reader stuff. Now streaming events (into golang channel, which makes for nice buffering and throttling)
- Binlog table listeners work
- More Migrator logic; existing logic for waiting on `state` events (e.g. `TablesCreatedState`)
2016-04-07 15:57:12 +02:00
Shlomi Noach
4dd5a93ed7 - More work on go-mysql reader: now properly notes binlog coordinates as it makes progress
- Properly creating multiple BinlogEntry-ies when reading multi statement binlog event (Still todo: transactions)
2016-04-06 18:44:54 +02:00
Shlomi Noach
d8fefb3d6f exploded args on range query building; iteration works 2016-04-05 19:50:49 +02:00
Shlomi Noach
3583ab5dc5 beginning support for ranges and iteration. Still WIP 2016-04-05 09:14:22 +02:00
Shlomi Noach
ea0906f4e5 reading table (range) min/max values, right now according to hardcoded unique key 2016-04-04 18:19:46 +02:00
Shlomi Noach
c75cd998fb a bunch of 'inspector' initial tests on the replica 2016-04-04 12:27:51 +02:00
Shlomi Noach
b461c320cc added BuildUniqueKeyRangeEndPreparedQuery() 2016-04-01 16:05:17 +02:00
Shlomi Noach
41c3d15963 building prepared queries (with positional params) 2016-04-01 13:55:51 +02:00
Shlomi Noach
39ebc75c43 initial work on sql query building 2016-04-01 13:36:56 +02:00