[kudu-CR] tablet_bootstrap: remove unused Arena variable

["Todd Lipcon (Code Review)" <ge...@cloudera.org>]

Hello Mike Percy,

I'd like you to do a code review.  Please visit

    http://gerrit.cloudera.org:8080/2477

to review the following change.

Change subject: tablet_bootstrap: remove unused Arena variable
......................................................................

tablet_bootstrap: remove unused Arena variable

This Arena wasn't being used, and Reset()ing it on every write was
using a significant fraction of CPU cycles in ASAN/TSAN debug builds.

This improved ts_recovery-itest --gtest_filter=\*969\* from ~65sec on
my laptop to ~33s. It will hopefully fix that test from being flaky.

Change-Id: I9c09c1867a0ee1a7fadffe869b7720192b375dc8
---
M src/kudu/tablet/tablet_bootstrap.cc
1 file changed, 1 insertion(+), 6 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/77/2477/1
-- 
To view, visit http://gerrit.cloudera.org:8080/2477
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-MessageType: newchange
Gerrit-Change-Id: I9c09c1867a0ee1a7fadffe869b7720192b375dc8
Gerrit-PatchSet: 1
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Todd Lipcon <to...@apache.org>
Gerrit-Reviewer: Mike Percy <mp...@apache.org>