In that case, zeppelin should fail to create note.
Felix Cheung <felixcheun...@hotmail.com>于2018年8月13日周一 下午3:47写道：
> Perhaps one concern is users having characters in note name that are
> invalid for file name/file path?
>
>
> ------------------------------
> *From:* Mohit Jaggi <mohitja...@gmail.com>
> *Sent:* Sunday, August 12, 2018 6:02 PM
> *To:* users@zeppelin.apache.org
> *Cc:* dev
> *Subject:* Re: [DISCUSS] ZEPPELIN-2619. Save note in [Title].zpln instead
> of [NOTEID]/note.json
>
> sounds like a good idea!
>
> On Sun, Aug 12, 2018 at 5:34 PM Jeff Zhang <zjf...@gmail.com> wrote:
>
>> Motivation
>>
>> The motivation of ZEPPELIN-2619 is to change the notes storage
>> structure. Previously we store it using {noteId}/note.json, we’d like to
>> change it into {note_name}_{note_id}.zpln. There are several reasons for
>> this change.
>>
>>
>> 1.
>>
>> {noteId}/note.json is not scalable. We put all notes in one root
>> folder in flat structure. And when zeppelin server starts, we need to read
>> all note.json to get the note file name and build the note folder
>> structure
>> (Because we need to get the note name which is stored in note.json to
>> build
>> the notebook menu). This would be a nightmare when you have large amounts
>> of notes.
>> 2.
>>
>> {noteId}/note.json is not maintainable. It is difficult for a
>> developer/administrator to find note file based on note name.
>> 3.
>>
>> {noteId}/note.json has no folder structure. Currently zeppelin have
>> to build the folder structure internally in memory according note name
>> which is a big overhead.
>>
>>
>> New Approach
>>
>> As I mentioned above, I propose to change the note storage structure
>> to {note_name}_{note_id}.zpln. note_name could contains folders, e.g.
>> folder_1/mynote_abcd.zpln
>>
>> This kind of note storage structure could bring several benefits.
>>
>> 1.
>>
>> We don’t need to load all notes when zeppelin starts. We just need to
>> list each folder to get the note name and note_id.
>> 2.
>>
>> It is much maintainable so that it is easy to find the note file
>> based on note name.
>> 3.
>>
>> It has the folder structure already. That can be mapped to the note
>> folder structure.
>>
>>
>> Side Effect
>>
>> This approach only works for file system storage, so that means we have
>> to drop support for MongoNotebookRepo. I think it is ok because I didn’t
>> see any users talk about this in community, so I assume no one is using it.
>>
>>
>> This is overall design, welcome any comments and feedback. Thanks.
>>
>>
>> Here's the google docs, you can also comment it here.
>>
>>
>> https://docs.google.com/document/d/126egAQmhQOL4ynxJ3AQJQRBBLdW8TATYcGkDL1DNZoE/edit?usp=sharing
>>
>>
>>
>>
