tree b24e2fbc8e00bdf668915f6ef07770425a68e493
parent 6293eaeaf759c9ba0f1f5cbf8af414c2b2a4043c
author tonglisayhi <tonglisayhi@google.com> 1550873587 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1551987529 +0000

[upload_debug_symbols] speed up the uploading process

Previouse version of this tool create gcsObjectWriter for every file in
ids.txt, tried to write to it and let the precondition of DoesNotExists
preventing from uploding duplicated files. However, that approach is
time consuming.

In this newer approach, we first get a set of all the objects in the
GCS bucket, then only create objectWriter for and upload the files that
does not show up in the set.

Bug: IN-796
Change-Id: Ib0f093f2637a4bcfb24ca00be8dee0581ba9f77a