[hash of previous git commit] emailaddress@domain.com [hash of this git commit] [name of this commit] The last part, the name of this commit, is optional, and is not present when there is an empty git commit, but the regex expression looks for it, and hence sees the expression as...
The Undo Last Commit currently behaves like git reset --mixed: it undoes the commit and discards anything that has been staged. If I had previously carefully added files or hunks to the stage, this work is lost. I think it would be better to switch to the git reset --soft behavior: I...
filename='/data/mysql_3314/mysqldata/undo_001'withopen(filename,'rb')asf:status=f.seek(4*16384,0)# 仅解析第4页data=f.read(16384)slot_list=struct.unpack('>1024L',data[72:72+4*1024])forxinrange(1024):print(slot_list[x],end='\n'if(x+1)%16==0else'\t') 我们可以看到很多undo...
commit事务会把缓存在 redo log buffer 中的 redo log写入到page cache，这种场景下是不会丢失数据，然...
Undo the last commit GoLand allows you to undo the last commit in the current branch. note You cannot undo a commit if it was pushed to a protected branch, that is a branch to whichforce --pushis not allowed (configure protected branches in theVersion Control | Gitpage of the IDE ...
git remote add origin <your_github_repo_url> git push -f -u origin master 2.有选择性的合并历史提交 git rebase -i <first_commit> 会进入一个如下所示的文件 1 pick ba07c7d add bootstrap theme and format import 2 pick 7d905b8 add newline at file last line 3 pick 037313c ...
Usegroup()to wrap many changes in a transaction. Any new changes will be added to the group untilcommit()is invoked. count = 0; changes.group(); var increase = new Change.inline(() => count++, () => count--); changes.add(increase); ...
根据不同的情况,Undo Segment Header中的State会被从TRX_UNDO_ACTIVE改成TRX_UNDO_TO_FREE,TRX_UNDO_TO_PURGE或TRX_UNDO_CACHED,这个修改其实就是InnoDB的事务结束的标志,无论是Rollback还是Commit,在这个修改对应的Redo落盘之后,就可以返回用户结果,并且Crash Recovery之后也不会再做回滚处理。 Undo for Rollback...
有一个注意点:因为单纯的insert sql不涉及多MVCC的能力。所以一旦事务commit,这条insert undo log就可以直接删除了。 update类型的undo log 为了方便画图,重点突出链条的概念我省略了update undo log的部分内容 一个事物A开启后插图了一条记录:name = tom,MySQL会记录下这样一条undo log ...
Last Log Offset:参数名为TRX_UNDO_LAST_LOG,当前page最后一个undo log header的位置。 Undo Segment FSEG Entry:参数名为TRX_UNDO_FSEG_HEADER,segment对应的inode的(space_id,page_no,offset等) Undo Segment Page List Base Node:参数名为TRX_UNDO_PAGE_LIST,undo page list的Base Node,对于同一个事务下的...