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6f9bc28edf9afbabbd4fb8eae1701c3ef7747c3c
"
This patchset brings in a statistics collector that tracks minimal
values for timestamps, TTLs and local deletion times for all the updates
made to a given memtable.
This statistics is later used when flushing memtables into SSTables
using 3.x ('mc') format to delta-encode corresponding values using
collected minimums as bases (that is why it is called encoding
statistics).
This patchset is sent out apart from other changes that introduce
writing SSTables 3.x to facilitate read path implementation that also
needs the encoding_stats structure.
The tests for write path implicitly cover this functionality as any rows
written to a SSTable 3.0 file make use of delta-encoding.
"
* 'projects/sstables-30/collect-encoding-statistics-v4' of https://github.com/argenet/scylla:
Collect encoding statistics for memtable updates.
Factor out min_tracker and max_tracker as common helpers.
Always pass mutation_partitions to partition_entry::apply()
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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>
Contributing to Scylla
Description
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