tree 41af739418ec02a449d12d7d7d1f66577854d7b4
parent a0802ff9c26b27486fcab2922a4a469945fe8ff0
author Minh Thai <mthai@google.com> 1587529078 -0700
committer Minh Thai <mthai@google.com> 1587669242 -0700

UploadPack: Clear advertised ref map after negotiation

After negotiation phase of a fetch, the advertised ref map is no longer used and
can be safely cleared. For >1GiB repos object selection and packfile writing may
take 10s of minutes. For the chromium.googlesource.com/chromium/src repo, this
advertised ref map is >400MiB. Returning this memory to the Java heap is a major
scalability win.

Change-Id: I00d453c5ef47630c21f199e333e1cfcf47b7e92a
Signed-off-by: Minh Thai <mthai@google.com>