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fed1e65e1e
_live_endpoints_just_added tracks the peer node which just becomes live. When a down node gets back, the peer nodes can receive multiple messages which would mark the node up, e.g., the message piled up in the sender's tcp stack, after a node was blocked with gdb and released. Each such message will trigger a echo message and when the reply of the echo message is received (real_mark_alive), the same node will be added to _live_endpoints_just_added.push_back more than once. Thus, we see the same node be favored more than once: INFO 2016-04-12 12:09:57,399 [shard 0] gossip - do_gossip_to_live_member: Favor newly added node 127.0.0.2 INFO 2016-04-12 12:09:58,412 [shard 0] gossip - do_gossip_to_live_member: Favor newly added node 127.0.0.2 INFO 2016-04-12 12:09:59,429 [shard 0] gossip - do_gossip_to_live_member: Favor newly added node 127.0.0.2 INFO 2016-04-12 12:10:00,429 [shard 0] gossip - do_gossip_to_live_member: Favor newly added node 127.0.0.2 INFO 2016-04-12 12:10:01,430 [shard 0] gossip - do_gossip_to_live_member: Favor newly added node 127.0.0.2 INFO 2016-04-12 12:10:02,442 [shard 0] gossip - do_gossip_to_live_member: Favor newly added node 127.0.0.2 INFO 2016-04-12 12:10:03,454 [shard 0] gossip - do_gossip_to_live_member: Favor newly added node 127.0.0.2 To fix, do not insert the node if it is already in _live_endpoints_just_added. Fixes #1178 Message-Id: <6bcfad4430fbc63b4a8c40ec86a2744bdfafb40f.1464161975.git.asias@scylladb.com>
#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 --recursive
Building and Running Scylla on Fedora
- Installing required packages:
sudo yum 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
- 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
Do not send pull requests.
Send patches to the mailing list address scylladb-dev@googlegroups.com. Be sure to subscribe.
In order for your patches to be merged, you must sign the Contributor's License Agreement, protecting your rights and ours. See http://www.scylladb.com/opensource/cla/.