abcfc19fe9
After reboot, all existing sstables are considered shared. That's a safe default. Reader used by compaction decides to use filtering reader (filters out data that doesn't belong to this shard) if sstable is considered shared even though it may actually be unshared. By avoiding filtering reader we're avoiding an extra check for each key, and that may be meaningful for compaction of tons of small partitions and even range reads of such. We do so by fixing sstable::_shared, which is now set properly for existing sstables at start. quick check using microbenchmark which extends perf_sstable with compaction mode: before: 69407.61 +- 37.03 partitions / sec (30 runs, 1 concurrent ops) after: 70161.09 +- 40.35 partitions / sec (30 runs, 1 concurrent ops) Fixes #3042. Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com> Message-Id: <20180504182158.21130-1-raphaelsc@scylladb.com>
Scylla
Quick-start
$ git submodule update --init --recursive
$ sudo ./install-dependencies.sh
$ ./configure.py --mode=release
$ ninja-build -j4 # Assuming 4 system threads.
$ ./build/release/scylla
$ # Rejoice!
Please see HACKING.md for detailed information on building and developing Scylla.
Running Scylla
- 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>