Paweł Dziepak 14757d8a83 types: collection_type: drop tombstone if covered by higher-level one
At the moment are inefficiencies in how
collection_type_impl::mutation::compact_and_expire( handles tombstones.
If there is a higher-level tombstone that covers the collection one
(including cases where there is no collection tombstone) it will be
applied to the collection tombstone and present in the compaction
output. This also means that the collection tombstone is never dropped
if fully covered by a higher-level one.

This patch fixes both those problems. After the compaction the
collection tombstone is either unchanged or removed if covered by a
higher-level one.

Fixes #4092.

Message-Id: <20190118174244.15880-1-pdziepak@scylladb.com>
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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. Note: GCC >= 8.1.1 is require 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>

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