Re: files deleted with no record?
we're all using source tree. I'm really interested to try and
reproduce this so I'll find some time today to do it.
Thanks again
On Fri, Jun 27, 2014 at 6:56 AM, Jeremy Scott wrote:
> Hi. Thanks for getting back to me.
>
> here is a screenshot from source tree to visualise the scenario:
>
> https://drive.google.com/file/d/0B-Wn7DfHsuhyTEVkRHAzeGVZelpMWjFxZW1kbVBKVlNab3pR/edit?usp=sharing
>
> I will attempt a script to reproduce this later today.
>
> Thanks
>
>
>
>
>
>
>
>
>
> On Fri, Jun 27, 2014 at 5:53 AM, Philip Oakley wrote:
>>
>> From: "Phil Hord"
>>
>>> On Mon, Jun 23, 2014 at 9:15 PM, Jeremy Scott
>>> wrote:
I just encountered a situation where a merge was made, with no
apparent changes in files (ie no log), but the result was that some
files were deleted.
person A adds some files
person B adds some files from the same point
>>>
>>>
>>> You mean from the same point in history, right? Not files with the
>>> same filename or path?
>>>
person B commits and pushes.
person A commits -- now merge is required
a few more commits on top of person B's commit
>>>
>>>
>>> I don't understand this step. Who adds a few more commits on top of B
>>> and why?
>>>
person A merges - this removes the files that B added. There is no log
of the files being deleted
>>
>>
>> A similar issue, by reference, just came up on the [git-users] list. The
>> reference was:
>> 1. http://randyfay.com/content/avoiding-git-disasters-gory-story
>>
>> In that case the problem was a mixture of tools and misunderstandings.
>>
>> It may not be the same as your case, but could give insights into what's
>> happening between different developers.
>>
>> Which Tools are You, person A and Person B using, with --version?
>>
>>>
>>> This sounds like an "evil merge" (see man gitglossary, and google),
>>> but it's not clear to me how you arrived here.
>>>
>>> When I tried to reproduce your issue with this script, it did not
>>> remove any files unexpectedly:
>>> --->8---
>>> #!/bin/sh
>>>
>>> set -e
>>> mkdir foo && cd foo && git init
>>> echo foo > foo && git add foo && git commit -mfoo
>>>
>>> git checkout -b PersonA master
>>> echo bar > bar && git add bar
>>> git commit -m"PersonA: bar"
>>>
>>> git checkout -b PersonB master
>>> echo baz > baz && git add baz
>>> git commit -m"PersonB: baz"
>>>
>>> echo foo-conflict >> foo && git add foo
>>> git commit -m"PersonB: foo"
>>>
>>> git checkout PersonA
>>> echo foo-different >> foo && git add foo
>>> git commit -m"PersonA: foo (conflicts with PersonB)"
>>>
>>> git log --oneline --all --stat
>>>
>>> if ! git merge PersonB ; then
>>> git checkout PersonA foo
>>> git commit --no-edit
>>> fi
>>> git log --oneline --graph --stat
>>> --->8---
>>>
>>> A sneaky issue with merges is that they do not have a clear way to
>>> show patch information -- the diff between the commit and its ancestor
>>> -- because they have multiple ancestors. You can show diffs for a
>>> merge relative to each of its parents, but it is not usually done for
>>> you automatically. This is why making changes in a merge which are
>>> not actually required for the merge is bad ("evil").
>>>
Clearly this is possible - was this a user error?
>>>
>>>
>>> Probably, but we'd need to see how the user got there.
>>> --
>>
>> Philip
>
>
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Re: files deleted with no record?
Hi. Thanks for getting back to me.
here is a screenshot from source tree to visualise the scenario:
https://drive.google.com/file/d/0B-Wn7DfHsuhyTEVkRHAzeGVZelpMWjFxZW1kbVBKVlNab3pR/edit?usp=sharing
I will attempt a script to reproduce this later today.
Thanks
On Fri, Jun 27, 2014 at 5:53 AM, Philip Oakley wrote:
> From: "Phil Hord"
>
>> On Mon, Jun 23, 2014 at 9:15 PM, Jeremy Scott
>> wrote:
>>>
>>> I just encountered a situation where a merge was made, with no
>>> apparent changes in files (ie no log), but the result was that some
>>> files were deleted.
>>>
>>> person A adds some files
>>> person B adds some files from the same point
>>
>>
>> You mean from the same point in history, right? Not files with the
>> same filename or path?
>>
>>> person B commits and pushes.
>>> person A commits -- now merge is required
>>> a few more commits on top of person B's commit
>>
>>
>> I don't understand this step. Who adds a few more commits on top of B and
>> why?
>>
>>> person A merges - this removes the files that B added. There is no log
>>> of the files being deleted
>
>
> A similar issue, by reference, just came up on the [git-users] list. The
> reference was:
> 1. http://randyfay.com/content/avoiding-git-disasters-gory-story
>
> In that case the problem was a mixture of tools and misunderstandings.
>
> It may not be the same as your case, but could give insights into what's
> happening between different developers.
>
> Which Tools are You, person A and Person B using, with --version?
>
>>
>> This sounds like an "evil merge" (see man gitglossary, and google),
>> but it's not clear to me how you arrived here.
>>
>> When I tried to reproduce your issue with this script, it did not
>> remove any files unexpectedly:
>> --->8---
>> #!/bin/sh
>>
>> set -e
>> mkdir foo && cd foo && git init
>> echo foo > foo && git add foo && git commit -mfoo
>>
>> git checkout -b PersonA master
>> echo bar > bar && git add bar
>> git commit -m"PersonA: bar"
>>
>> git checkout -b PersonB master
>> echo baz > baz && git add baz
>> git commit -m"PersonB: baz"
>>
>> echo foo-conflict >> foo && git add foo
>> git commit -m"PersonB: foo"
>>
>> git checkout PersonA
>> echo foo-different >> foo && git add foo
>> git commit -m"PersonA: foo (conflicts with PersonB)"
>>
>> git log --oneline --all --stat
>>
>> if ! git merge PersonB ; then
>> git checkout PersonA foo
>> git commit --no-edit
>> fi
>> git log --oneline --graph --stat
>> --->8---
>>
>> A sneaky issue with merges is that they do not have a clear way to
>> show patch information -- the diff between the commit and its ancestor
>> -- because they have multiple ancestors. You can show diffs for a
>> merge relative to each of its parents, but it is not usually done for
>> you automatically. This is why making changes in a merge which are
>> not actually required for the merge is bad ("evil").
>>
>>> Clearly this is possible - was this a user error?
>>
>>
>> Probably, but we'd need to see how the user got there.
>> --
>
> Philip
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Re: files deleted with no record?
From: "Phil Hord"
On Mon, Jun 23, 2014 at 9:15 PM, Jeremy Scott
wrote:
I just encountered a situation where a merge was made, with no
apparent changes in files (ie no log), but the result was that some
files were deleted.
person A adds some files
person B adds some files from the same point
You mean from the same point in history, right? Not files with the
same filename or path?
person B commits and pushes.
person A commits -- now merge is required
a few more commits on top of person B's commit
I don't understand this step. Who adds a few more commits on top of B
and why?
person A merges - this removes the files that B added. There is no
log
of the files being deleted
A similar issue, by reference, just came up on the [git-users] list. The
reference was:
1. http://randyfay.com/content/avoiding-git-disasters-gory-story
In that case the problem was a mixture of tools and misunderstandings.
It may not be the same as your case, but could give insights into what's
happening between different developers.
Which Tools are You, person A and Person B using, with --version?
This sounds like an "evil merge" (see man gitglossary, and google),
but it's not clear to me how you arrived here.
When I tried to reproduce your issue with this script, it did not
remove any files unexpectedly:
--->8---
#!/bin/sh
set -e
mkdir foo && cd foo && git init
echo foo > foo && git add foo && git commit -mfoo
git checkout -b PersonA master
echo bar > bar && git add bar
git commit -m"PersonA: bar"
git checkout -b PersonB master
echo baz > baz && git add baz
git commit -m"PersonB: baz"
echo foo-conflict >> foo && git add foo
git commit -m"PersonB: foo"
git checkout PersonA
echo foo-different >> foo && git add foo
git commit -m"PersonA: foo (conflicts with PersonB)"
git log --oneline --all --stat
if ! git merge PersonB ; then
git checkout PersonA foo
git commit --no-edit
fi
git log --oneline --graph --stat
--->8---
A sneaky issue with merges is that they do not have a clear way to
show patch information -- the diff between the commit and its ancestor
-- because they have multiple ancestors. You can show diffs for a
merge relative to each of its parents, but it is not usually done for
you automatically. This is why making changes in a merge which are
not actually required for the merge is bad ("evil").
Clearly this is possible - was this a user error?
Probably, but we'd need to see how the user got there.
--
Philip
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
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Re: files deleted with no record?
On Mon, Jun 23, 2014 at 9:15 PM, Jeremy Scott wrote:
> I just encountered a situation where a merge was made, with no
> apparent changes in files (ie no log), but the result was that some
> files were deleted.
>
> person A adds some files
> person B adds some files from the same point
You mean from the same point in history, right? Not files with the
same filename or path?
> person B commits and pushes.
> person A commits -- now merge is required
> a few more commits on top of person B's commit
I don't understand this step. Who adds a few more commits on top of B and why?
> person A merges - this removes the files that B added. There is no log
> of the files being deleted
This sounds like an "evil merge" (see man gitglossary, and google),
but it's not clear to me how you arrived here.
When I tried to reproduce your issue with this script, it did not
remove any files unexpectedly:
--->8---
#!/bin/sh
set -e
mkdir foo && cd foo && git init
echo foo > foo && git add foo && git commit -mfoo
git checkout -b PersonA master
echo bar > bar && git add bar
git commit -m"PersonA: bar"
git checkout -b PersonB master
echo baz > baz && git add baz
git commit -m"PersonB: baz"
echo foo-conflict >> foo && git add foo
git commit -m"PersonB: foo"
git checkout PersonA
echo foo-different >> foo && git add foo
git commit -m"PersonA: foo (conflicts with PersonB)"
git log --oneline --all --stat
if ! git merge PersonB ; then
git checkout PersonA foo
git commit --no-edit
fi
git log --oneline --graph --stat
--->8---
A sneaky issue with merges is that they do not have a clear way to
show patch information -- the diff between the commit and its ancestor
-- because they have multiple ancestors. You can show diffs for a
merge relative to each of its parents, but it is not usually done for
you automatically. This is why making changes in a merge which are
not actually required for the merge is bad ("evil").
> Clearly this is possible - was this a user error?
Probably, but we'd need to see how the user got there.
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
files deleted with no record?
I just encountered a situation where a merge was made, with no apparent changes in files (ie no log), but the result was that some files were deleted. person A adds some files person B adds some files from the same point person B commits and pushes. person A commits -- now merge is required a few more commits on top of person B's commit person A merges - this removes the files that B added. There is no log of the files being deleted Clearly this is possible - was this a user error? Thanks -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
