On Mon, Nov 13, 2017 at 11:57 PM, Enrico Olivelli <eolive...@gmail.com>
wrote:

> Il mar 14 nov 2017, 08:53 Sijie Guo <guosi...@gmail.com> ha scritto:
>
> > On Mon, Nov 13, 2017 at 11:29 PM, Enrico Olivelli <eolive...@gmail.com>
> > wrote:
> >
> > > Thank you Sijie,
> > > Overall looks good but the compatibility part could be enhanced at
> least
> > > writing that ledgers created with non default ledgertype and
> storagehints
> > > won't we accessible from old clients.
> >
> >
> > sure I will improve it. but frankly speaking, we should first switch
> ledger
> > metadata from text format to binary format, then implement this. The text
> > format is a huge trouble to extensibility. Also, client doesn't use
> ledger
> > type and storage hints directly.
> >
>
> Has already said, +1 for me for the switch. I wonder if we should enable
> the 4.6 or 4.5 clients to read binary metadata, in order to support the
> migration smoothly
> Enrico
>

No. it should be in 4.7. Switching to binary metadata should be treated as
a new feature. Only bug fixes are allowed in 4.6 and 4.5.

- Sijie


>
> >
> > I know that this is very common but
> > > an explicit statement would be meaningful in this case.
> > >
> > > Enrico
> > >
> > > Il mar 14 nov 2017, 01:30 Sijie Guo <guosi...@gmail.com> ha scritto:
> > >
> > > > Hi all,
> > > >
> > > > This is a proposal for introducing LedgerType, Flags and StorageHints
> > > > (after a discussion with JV and Enrico on Slack). It is to address
> the
> > > > confusions at BP-14. Please take a look and give me feedback.
> > > >
> > > >
> > > > https://cwiki.apache.org/confluence/display/BOOKKEEPER/
> > > BP-18%3A+LedgerType%2C+Flags+and+StorageHints
> > > >
> > > > - Sijie
> > > >
> > > --
> > >
> > >
> > > -- Enrico Olivelli
> > >
> >
> --
>
>
> -- Enrico Olivelli
>

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