From: Jonathan Nieder Date: Mon, 07 Mar 2011 21:23:30 GMT Subject: Re: [PATCH v2 00/12] vcs-svn: incremental import Message-ID: <20110307212330.GA15732@elie> In-Reply-To: Sverre Rabbelier wrote: > On Sun, Mar 6, 2011 at 23:54, Jonathan Nieder wrote: >> Patch 1 changes the mark numbers for blobs to be ridiculously high, >> to make room for memorable commit marks (:1 for r1, :2 for r2, etc). > > How high is rediculously high? 2^30. Later in the series (vcs-svn: eliminate repo_tree structure) the blob marks are eliminated altogether. > "Marks are stored in a sparse array, using 1 pointer (4 bytes or 8 > bytes, depending on pointer size) per mark. Although the array is > sparse, frontends are still strongly encouraged to use marks between 1 > and n, where n is the total number of marks required for this import." I assume that is mostly meant to make it easier to write alternate backends.