Setting Java heap size via TEST_CLUSTER_PARAMS or es_params doesn't work

[dbackeus]

If I try to provide -Xms500m etc to set the Java heap size via TEST_CLUSTER_PARAMS as mentioned in the README or via the es_params argument when trying to start my test cluster I get ERROR: X is not a recognized option.

Also the test cluster runner doesn't appear to notice that the elasticsearch command fails so it keeps waiting the full 60 seconds before timing out.

Example:

The command I'm attempting to run in this case is:

TEST_CLUSTER_PARAMS='-Xms500m -Xmx500m' bundle exec rspec

Is there something I'm missing or was there a regression at some point?

ElasticSearch documentation generally suggests modifying the ES_JAVA_OPTS env var to set heap size but I'm uncertain how to make use of that with Elasticsearch::Extensions::Test::Cluster.

[dbackeus]

Turned out that using ES_JAVA_OPTS to set the heap was as easy as adding ES_JAVA_OPTS=-Xms128m -Xmx128m to our .env.test file (we use dotenv-rails to manage environment variables in our rails app).

Presumably the example in the README relies on a legacy version of elasticsearch (2.0.0 by judging by the executable filename) which did support these options? Would probably be a good idea to update the documentation considering these params don't apply to new versions and should use ES_JAVA_OPTS instead.

[picandocodigo]

@dbackeus thanks for reporting this and posting the solution. I'll check it out and update the documentation accordingly. Thanks! 😄

[picandocodigo]

@dbackeus This was updated in 33d1895. Thanks again for reporting this! I also updated other minor details on the README and tasks. I'll close the issue now, but don't hesitate to open a new issue if you encounter any similar problems. Cheers!