" When writing streamed data into sstables, while using time window compaction strategy, we have to emit a new sstable for each time window. Otherwise we can end up with sstables, mixing data from wildly different windows, ruining the compaction strategy's ability to drop entire sstables when all data within is expired. This gets worse as these mixed sstables get compacted together with sstables that used to contain a single time window. This series provides a solution to this by segregating the data by its atom's the time-windows. This is done on the new RPC streaming and the new row-level, repair, memtable-flush and compaction, ensuring that the segregation requirement is respected at all times. Fixes: #2687 " * 'segregate-data-into-sstables-by-time-window-streaming/v2.1' of ssh://github.com/denesb/scylla: streaming,repair: restore indentation repair: pass the data stream through the compaction strategy's interposer consumer streaming: pass the data stream through the compaction strategy's interposer consumer TWCS: implement add_interposer_consumer() compaction_strategy: add add_interposer_consumer() Add mutation_source_metadata tests: add unit test for timestamp_based_splitting_writer Add timestamp_based_splitting_writer Introduce mutation_writer namespace
Scylla
Quick-start
To get the build going quickly, Scylla offers a frozen toolchain which would build and run Scylla using a pre-configured Docker image. Using the frozen toolchain will also isolate all of the installed dependencies in a Docker container. Assuming you have met the toolchain prerequisites, which is running Docker in user mode, building and running is as easy as:
$ ./tools/toolchain/dbuild ./configure.py
$ ./tools/toolchain/dbuild ninja build/release/scylla
$ ./tools/toolchain/dbuild ./build/release/scylla --developer-mode 1
Please see HACKING.md for detailed information on building and developing Scylla.
Note: GCC >= 8.1.1 is required to compile 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>