clean up config directory and use docker for travis

[at15]

Related issue #209

breaking changes

• removed config/plugin.xml, added class Benchmarks under com.oltpbenchmark.benchmarks
  • use reflection might work, but this way is easier and requires no external library
• removed most legacy config, all the config that is not sample_<bench>_config.xml are considered legacy and removed.
• added benchmarks.yml and databases.yml as a catalog for supported benchmark and databases
  • added config.py to generate config given benchmark and database from template (based on https://github.com/cmu-db/peloton/blob/master/script/oltpbenchmark/benchmark.py)
  • ideally, instead of hand written they should be exported from dbdb.io
• added docker folder to run database using docker, it's (very) inaccurate, but can test correctness and is handy on CI systems
  • added create_db.py to create database using db shell inside containers
• added TiDB and MemSQL, only TPC-C is tested, both have a lot of errors
• updated doc in config and docker folder to address those changes
• removed old travis test entirely, all the tests on travis is using docker, including mysql and postgres.
  • travis started mysql and postgres by default, they are stopped to avoid port conflict

known issues

• benchmakrs
  • chbenchmark too many errors https://travis-ci.org/benchhub/oltpbench/jobs/338773148 Travis chbenchmark #161
  • hyadpat no config
  • jpab no ddl
  • tpch requires db gen
  • tpcds no config and seems also require db gen
• databases
  • memsql has too many errors, I just copied mysql's ddl, it could be the cause

PR that would conflict with this one, (actually I think all the pending PR will ...)

• Refactor DBWorkload class Rename DBWorkload class to OLTPBench. #238
• MemSQL Merge Memsql #182
• Update on Travis Travis chbenchmark #161

To play around with this PR

cd /tmp
git clone [email protected]:benchhub/oltpbench.git
cd oltpbench
git checkout config/cleanup-v2 
./config/config.py benchmarks
./config/config.py databases
# stop your local mysql/postgres
# make sure you have docker and docker-compose installed
export BENCH=tpcc
export DB=mysql
./config/config.py generate --bench ${BENCH} --db ${DB} --scalefactor=1
./docker/travis_start.sh
ant build
./oltpbenchmark --bench ${BENCH} --config config/generated_${BENCH}_${DB}_config.xml --create true --load true --execute true
./docker/travis_stop.sh

[apavlo]

@at15 What is the status of this?

[at15]

@apavlo I think I need to wait for other PRs that introduces new databases to be merged first, so I can solve the conflicts in my fork's branch before it got merged into upstream

[apavlo]

Those other PRs are not going to be merged (at least not for now). We can do that manually later.

[at15]

@apavlo then I think it's ready to be merged, I don't have any update since the initial PR