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a397889c81
"Currently new nodes calculate digests based on v3 schema mutations, which are very different from v2 mutations. As a result they will use schemas with different table_schema_version that the old nodes. The old nodes will not recognize the version and will try to request its definition. That will fail, because old nodes don't understand v3 schema mutations. To fix this problem, let's preserve the digests during migration, so that they're the same on new and old nodes. This will allow requests to proceed as usual. This does not solve the problem of schema being changed during the rolling upgrade. This is not allowed, as it would bring the same problem back. Fixes #2549." * tag 'tgrabiec/use-consistent-schema-table-digests-v2' of github.com:cloudius-systems/seastar-dev: tests: Add test for concurrent column addition legacy_schema_migrator: Set digest to one compatible with the old nodes schema_tables: Persist table_schema_version schema_tables: Introduce system_schema.scylla_tables schema_tables: Simplify read_table_mutations() schema_tables: Resurrect v2 read_table_mutations() system_keyspace: Forward-declare legacy schemas legacy_schema_migrator: Take storage_proxy as dependency
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>