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5a70c8c8f4
Currently, compaction will no longer happen for a column family which a compaction failed for some unexpected reason. We want to implement a retry policy that will sleep for a while until the next compaction attempt. This patch implements retry policy for compaction using exponential_backoff_retry. With exponential_backoff_retry, the sleep time grows exponentially with the number of retries until the maximum sleep time is reached. For compaction specifically, the base sleep time will be 5 seconds and the maximum sleeping time will be 300 seconds, i.e. 5 minutes. If compaction succeeded after a retry, the sleep time will be reset to the base sleep time. Signed-off-by: Raphael S. Carvalho <raphaelsc@cloudius-systems.com>
#Urchin
##Building Urchin
In addition to required packages by Seastar, the following packages are required by Urchin.
Submodules
Urchin uses submodules, so make sure you pull the submodules first by doing:
git submodule init
git submodule update
Building urchin on Fedora
Installing required packages:
sudo yum install yaml-cpp-devel lz4-devel zlib-devel snappy-devel jsoncpp-devel
Building urchin on Ubuntu 14.04
Installing required packages:
sudo apt-get install libyaml-cpp-dev liblz4-dev zlib1g-dev libsnappy-dev libjsoncpp-dev