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870e9e5729fcbdef334312272e2cc610d54be583
Disabling compaction of a region is currently done in order to keep the references valid. But disabling only compaction is not enough, we also need to disable eviction, as it also invalidates references. Rather than introducing another type of lock, compaction and eviction are controlled together, generalized as "reclaiming" (hence the reclaim_lock).
#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 --recursive
Building urchin on Fedora
Installing required packages:
sudo yum install yaml-cpp-devel lz4-devel zlib-devel snappy-devel jsoncpp-devel thrift-devel antlr3-tool antlr3-C++-devel libasan libubsan
Building urchin on Ubuntu 14.04
Installing required packages:
sudo apt-get install libyaml-cpp-dev liblz4-dev zlib1g-dev libsnappy-dev libjsoncpp-dev
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