github/gh-ost

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GitHub's Online Schema-migration Tool for MySQL

Stars: 13.6k
Forks: 1.4k
Open beginner issues: 0
Indexed issues: 260
Avg merge: 2h 31m
Merged PRs (30d): 4

Dominant language: Go
License: MIT
Last GitHub push: Aug 28, 2026
Latest indexed: Sep 16, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted good first issue

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260 open issues indexed

Speed up copying Open

question

github/gh-ost#845 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
enable gh-ost checking the binlog format in real time (enhancement) Open

enhancement

github/gh-ost#854 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Simplify the chunk range condition generate logic, reduce the risk of using wrong execute plan(enhancement) Open

enhancement

github/gh-ost#855 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
about connection timed out Open

github/gh-ost#856 · 5 comments · 2 reactions · 0 assignees · Indexed Sep 16, 2026
Run integration tests (gh-ost-replica-tests) in docker Open

build enhancement

github/gh-ost#857 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Running on Google Cloud SQL with partitioned tables Open

enhancement

github/gh-ost#863 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
bad index stats after table cut-over Open

enhancement performance

github/gh-ost#875 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Hit enter and do nothing Open

github/gh-ost#880 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
gh-ost hang on INFO Waiting for ghost table to be migrated. Current lag is 0s in MySQL 8.0.21 Open

github/gh-ost#884 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
[Question] Gh-ost hits fatal load even if max-load is configured Open

question

github/gh-ost#885 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
[Question] Drop of _ghc table after succesful completion Open

question

github/gh-ost#886 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Changing ENUM value corrupts row using changed valued Open

bug data-integrity enum reproduced

github/gh-ost#920 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
lock hang at cut-over table stage Open

github/gh-ost#939 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
cut-over-lock-timeout-seconds not being respected Open

github/gh-ost#952 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
ERROR commands out of sync. Did you run multiple statements at once Open

github/gh-ost#956 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
add / drop partitions in between before cutover Open

github/gh-ost#972 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
gh-ost swap table is hanging cluster Open

github/gh-ost#974 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
StreamEvents encountered unexpected error ... Err: invalid json type 122 Open

github/gh-ost#976 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Replication is broken: Slave_IO_Running: No, Slave_SQL_Running: No Open

github/gh-ost#983 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Document --alter Open

documentation

github/gh-ost#989 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 16, 2026
Documentation - switching to row based replication and data loss Open

bug documentation

github/gh-ost#991 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
In the CutOver phase wait events up to lock timeout, the _del table lock to be not release, cause DB not writable. Introduced in #755 Open

github/gh-ost#992 · 8 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
binlog streamer throwing error: unsupport type 141 in binlog and don't know how to handle Open

github/gh-ost#1012 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
why after I adding ' -assume-rbr' it still bothers with 'Needed: SUPER|' ? Open

github/gh-ost#1017 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
ERROR Error 1048: Column 'guid' cannot be null Open

github/gh-ost#1023 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
MySQL 8 rename column lost data Open

data-integrity mysql8.x

github/gh-ost#1034 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
range ID of the big table to the table_ gho Open

github/gh-ost#1057 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
How to check lost data size when alter add new unique index. Open

question

github/gh-ost#1058 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
gh-ost does not work when REPLICATE_REWRITE_DB replication filters are in use Open

github/gh-ost#1075 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Base table count and the ghost table counts are not matching Open

data-integrity

github/gh-ost#1080 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Heartbeat Lag with Aurora blocking cutover. Open

question

github/gh-ost#1081 · 6 comments · 3 reactions · 0 assignees · Indexed Sep 16, 2026
Lock acquisition failing, migration fails after exhausting retries Open

github/gh-ost#1109 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
gh-ost fails to insert a row with Error 1366: Incorrect string value Open

github/gh-ost#1112 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
How does gh-ost guarantee no race between chunk copying & binlog processing Open

question

github/gh-ost#1113 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
A data-loss case occurs when chunk-key contains decimal-column Open

data-integrity

github/gh-ost#1119 · 1 comment · 6 reactions · 0 assignees · Indexed Sep 16, 2026
optimize migrator's executeWriteFuncs Open

enhancement

github/gh-ost#1123 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Delete records not in sync between table and gho table Open

data-integrity

github/gh-ost#1142 · 4 comments · 2 reactions · 0 assignees · Indexed Sep 16, 2026
gh-ost does not copy data on tables with high write load Open

performance

github/gh-ost#1150 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Error running "gh-ost" on Aurora get errors Open

github/gh-ost#1159 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Question: Primary instance restarts Open

question

github/gh-ost#1169 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
If the table contains a timestamp column, it will cause gh-ost to incorrect timestamp value (add 8 hours) Open

data-integrity

github/gh-ost#1176 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Can we support the change from common table to partitioned table Open

question

github/gh-ost#1187 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
ENUM to Varchar Open

github/gh-ost#1188 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Cut-off transaction is very slow, leading to downtimes in production[Question] Open

enhancement performance

github/gh-ost#1191 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Performance Improvements (Raw Ideas) Open

enhancement performance

github/gh-ost#1204 · 1 comment · 4 reactions · 0 assignees · Indexed Sep 16, 2026
About adding unique index lost data - There are delete operation scenarios Open

github/gh-ost#1205 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
The table cut failed and caused the slave library to block Open

github/gh-ost#1233 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
add the possibility to toggle the optimizer switch during the migration session Open

feature

github/gh-ost#1235 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Change lock_wait_timeout’s value to reduce risk at --cut-over=default Open

github/gh-ost#1255 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 16, 2026
Fail to verify SSL identity when recursing into a host with a different SSL cert Open

github/gh-ost#1259 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026

github/gh-ost

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