mirror of
https://github.com/scylladb/scylladb.git
synced 2026-05-29 19:21:01 +00:00
b8b8a8099c
This patch adds a function to compute the row marker of a view row given the base row. There are two cases to consider when building the row marker: 1) there is a column C that is a regular base column but is in the view PK; and 2) the columns for the base and the view PKs are the same. For 1), the view row marker timestamp will be the biggest between the base's row marker and C. The TTL will be that of C. This means that if C expires, the view row maker will expire as well (and the row, if no other column is keeping it alive). Note that if the base row marker expires but not C, then the base row will still be live due to C and we shouldn't expire the view row. For 2), the view row timestamp will be the same as the base row timestamp. The TTL should be set in such a way that both base and view rows live for the same time. We thus set the view row TTL to be the max of any other TTL in the base row. This is particularly important in the case where the base row marker has a TTL, but a column *absent* from the view holds a greater one. Signed-off-by: Duarte Nunes <duarte@scylladb.com>
Scylla
Building Scylla
In addition to required packages by Seastar, the following packages are required by Scylla.
Submodules
Scylla uses submodules, so make sure you pull the submodules first by doing:
git submodule init
git submodule update --init --recursive
Building and Running Scylla on Fedora
- Installing required packages:
sudo dnf install yaml-cpp-devel lz4-devel zlib-devel snappy-devel jsoncpp-devel thrift-devel antlr3-tool antlr3-C++-devel libasan libubsan gcc-c++ gnutls-devel ninja-build ragel libaio-devel cryptopp-devel xfsprogs-devel numactl-devel hwloc-devel libpciaccess-devel libxml2-devel python3-pyparsing lksctp-tools-devel protobuf-devel protobuf-compiler systemd-devel libunwind-devel
- Build Scylla
./configure.py --mode=release --with=scylla --disable-xen
ninja-build build/release/scylla -j2 # you can use more cpus if you have tons of RAM
- Run Scylla
./build/release/scylla
- run Scylla with one CPU and ./tmp as data directory
./build/release/scylla --datadir tmp --commitlog-directory tmp --smp 1
- For more run options:
./build/release/scylla --help
Building Fedora RPM
As a pre-requisite, you need to install Mock on your machine:
# Install mock:
sudo yum install mock
# Add user to the "mock" group:
usermod -a -G mock $USER && newgrp mock
Then, to build an RPM, run:
./dist/redhat/build_rpm.sh
The built RPM is stored in /var/lib/mock/<configuration>/result directory.
For example, on Fedora 21 mock reports the following:
INFO: Done(scylla-server-0.00-1.fc21.src.rpm) Config(default) 20 minutes 7 seconds
INFO: Results and/or logs in: /var/lib/mock/fedora-21-x86_64/result
Building Fedora-based Docker image
Build a Docker image with:
cd dist/docker
docker build -t <image-name> .
Run the image with:
docker run -p $(hostname -i):9042:9042 -i -t <image name>