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https://issues.apache.org/jira/browse/CALCITE-2442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16570904#comment-16570904
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Andrei Sereda commented on CALCITE-2442:
----------------------------------------
{quote}
Can someone please clarify: is this "cassandra mini cluster" a separate o/s
process?
{quote}
It is using [CassandraUnit|https://github.com/jsevellec/cassandra-unit] which
starts embedded version of cassandra using [Cluster
API|https://docs.datastax.com/en/drivers/java/3.0/com/datastax/driver/core/Cluster.html]
(not a sub-process with
[ProcessBuilder|https://docs.oracle.com/javase/7/docs/api/java/lang/ProcessBuilder.html])
JVM shutdown should stop any running instances.
To check the pid run the following (same user as cassandra daemon):
{code:bash}
$ netstat -nlp | grep :9142
OR
$ /usr/sbin/lsof -i -P -n | grep 9142
{code}
The reason we added explicit shutdown is because of temporary folders. Also
being able to close cassandra cluster more gracefully (it is possible cluster
uses shutdown hook).
> Cassandra unit test leaves stale folders in cassandra/ module on Windows
> ------------------------------------------------------------------------
>
> Key: CALCITE-2442
> URL: https://issues.apache.org/jira/browse/CALCITE-2442
> Project: Calcite
> Issue Type: Bug
> Components: cassandra
> Reporter: Andrei Sereda
> Priority: Major
>
> [~Sergey Nuyanzin] reported that
> [CassandraUnit|https://github.com/jsevellec/cassandra-unit] leaves
> {{.toDelete}} folder in maven module folder ({{cassandra/}}) rather than
> {{target/}} where all build and temporary files should be located.
> {quote}
> There is one more strange thing (at least on Windows): while building a
> file with name ".toDelete" is generated under calcite\cassandra and it's
> not removed by the end of tests
> Is there a way to make cassandra generates these files in target directory
> e.g.?
> {quote}
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