[PATCH 4 of 9] branchmap: read and write key part related to filtered revision

[Idan Kamara]

On Wed, Dec 26, 2012 at 10:33 PM, Pierre-Yves David <
pierre-yves.david at ens-lyon.org> wrote:
>
> # HG changeset patch
> # User Pierre-Yves David <pierre-yves.david at logilab.fr>
> # Date 1356187406 -3600
> # Node ID ed03a82360c2b90195a2d4dacca205e5a705a1f2
> # Parent  4b098d0339f9e8b1805c4f6ef1d8bcf59f5a6349
> branchmap: read and write key part related to filtered revision
>
> Now that we have a third part for the cache key we need to write and read
> it on
> disk. It is only written when there is filtered revision. This keep the
> format
> compatible with older version.

What will happen when an older client tries to use a newly
written cache?
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