Botond Dénes 5f22771ea8 tests/mutation_reader_test stabilize test_multishard_combining_reader_non_strictly_monotonic_positions
Currently the
test_multishard_combining_reader_non_strictly_monotonic_positions is
flaky. The test is somewhat unconventional, in that it doesn't use the
same instance of data as the input to the test and as it's expected
output, instead it invokes the method which generates this data
(`make_fragments_with_non_monotonic_positions()`) twice, first to
generate the input, and a secondly to generate the expected output. This
means that the test is prone to any deviation in the data generated by
said method. One such deviation, discovered recently, is that the method
doesn't explicitly specify the deletion time of the generated range
tombstones. This results in this deletion time sometimes differing
between the test input and the expected output. Solve by explicitly
passing the same deletion time to all created range tombstones.

Refs: #4695
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2019-02-20 08:03:46 -08:00
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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>

Contributing to Scylla

Hacking howto Guidelines for contributing

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Python 26.1%
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Shell 0.3%