<blockquote>
<p>the flat nodes files also does and is quite big.</p>
</blockquote>
<p>But the flat nodes file isn't deleted.</p>
<blockquote>
<p>My patch aims to reclaim that disk space before it starts creating the indexes</p>
</blockquote>
<p>It doesn't seem to be reclaim the slim table space.</p>
<p>For disk usage, this branch is actually <strong>worse</strong></p>
<p>this PR on the left, HEAD~ on the right.</p>
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