{"action":"created","comment":{"url":"https://api.github.com/repos/pingcap/tidb/pulls/comments/82497524","pull_request_review_id":3404015,"id":82497524,"diff_hunk":"@@ -44,26 +44,20 @@ type Domain struct {\n \tSchemaValidity *schemaValidityInfo\n }\n \n-func (do *Domain) loadInfoSchema(txn kv.Transaction) (err error) {\n-\tdefer func() {\n-\t\tif err != nil {\n-\t\t\tdo.SchemaValidity.setLastFailedTS(txn.StartTS())\n-\t\t}\n-\t}()\n-\tm := meta.NewMeta(txn)\n-\tschemaMetaVersion, err := m.GetSchemaVersion()\n+func (do *Domain) loadInfoSchema(handle *infoschema.Handle, usedSchemaVersion int64, startTS uint64) error {\n+\tsnapshot, err := do.store.GetSnapshot(kv.NewVersion(startTS))\n \tif err != nil {\n \t\treturn errors.Trace(err)\n \t}\n-\n-\tinfo := do.infoHandle.Get()\n-\tif info != nil && schemaMetaVersion <= info.SchemaMetaVersion() {\n-\t\t// info may be changed by other txn, so here its version may be bigger than schema version,\n-\t\t// so we don't need to reload.\n-\t\tlog.Debugf(\"[ddl] schema version is still %d, no need reload\", schemaMetaVersion)\n+\tm := meta.NewSnapshotMeta(snapshot)","path":"domain/domain.go","position":23,"original_position":23,"commit_id":"259cd9830463523de147cfbf1ca8bf92124a3aa4","original_commit_id":"3b896d1ce46fb34bf69d935522b6c18de989caea","user":{"login":"shenli","id":1192573,"avatar_url":"https://avatars.githubusercontent.com/u/1192573?v=3","gravatar_id":"","url":"https://api.github.com/users/shenli","html_url":"https://github.com/shenli","followers_url":"https://api.github.com/users/shenli/followers","following_url":"https://api.github.com/users/shenli/following{/other_user}","gists_url":"https://api.github.com/users/shenli/gists{/gist_id}","starred_url":"https://api.github.com/users/shenli/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/shenli/subscriptions","organizations_url":"https://api.github.com/users/shenli/orgs","repos_url":"https://api.github.com/users/shenli/repos","events_url":"https://api.github.com/users/shenli/events{/privacy}","received_events_url":"https://api.github.com/users/shenli/received_events","type":"User","site_admin":false},"body":"You 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