Revision df74b775e6e3034714bb75b42aa8f97e9a47dd81 authored by Andrew Kryczka on 19 April 2017, 20:15:16 UTC, committed by Facebook Github Bot on 19 April 2017, 20:26:47 UTC
Summary: This was requested by a customer who wants to proactively monitor whether any valid backups are available. The existing performance was poor because Open() serially reads every small meta-file (one per backup), which was slow on HDFS. Now we only read the minimum number of meta-files to find `max_valid_backups_to_open` valid backups. The customer mentioned above can just set it to one. Closes https://github.com/facebook/rocksdb/pull/2151 Differential Revision: D4882564 Pulled By: ajkr fbshipit-source-id: cb0edf9e8ac693e4d5f24902e725a011ed8c0c2f
1 parent 1dd7760
Vagrantfile
# Vagrant file
Vagrant.configure("2") do |config|
config.vm.provider "virtualbox" do |v|
v.memory = 4096
v.cpus = 2
end
config.vm.define "ubuntu14" do |box|
box.vm.box = "ubuntu/trusty64"
end
config.vm.define "centos65" do |box|
box.vm.box = "chef/centos-6.5"
end
config.vm.define "FreeBSD10" do |box|
box.vm.guest = :freebsd
box.vm.box = "robin/freebsd-10"
# FreeBSD does not support 'mount_virtualbox_shared_folder', use NFS
box.vm.synced_folder ".", "/vagrant", :nfs => true, id: "vagrant-root"
box.vm.network "private_network", ip: "10.0.1.10"
# build everything after creating VM, skip using --no-provision
box.vm.provision "shell", inline: <<-SCRIPT
pkg install -y gmake clang35
export CXX=/usr/local/bin/clang++35
cd /vagrant
gmake clean
gmake all OPT=-g
SCRIPT
end
end
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