Paweł Dziepak 5b3aa8e90d Merge "Fix range tombstone emitting which led to skipping over data" from Tomasz
"Fixes cache reader to not skip over data in some cases involving overlapping
range tombstones in different partition versions and discontinuous cache.

Introduced in 2.0

Fixes #3053."

* tag 'tgrabiec/fix-range-tombstone-slicing-v2' of github.com:scylladb/seastar-dev:
  tests: row_cache: Add reproducer for issue #3053
  tests: mvcc: Add test for partition_snapshot::range_tombstones()
  mvcc: Optimize partition_snapshot::range_tombstones() for single version case
  mvcc: Fix partition_snapshot::range_tombstones()
  tests: random_mutation_generator: Do not emit dummy entries at clustering row positions

(cherry picked from commit 051cbbc9af)
(cherry picked from commit be5127388d)

[tgrabiec: dropped mvcc_test change, because the file does not exist here]
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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>

Contributing to Scylla

Guidelines for contributing

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