Hoss Man created SOLR-8999:
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Summary: MiniSolrCloudCluster should support starting a cluster
w/existing zk data
Key: SOLR-8999
URL: https://issues.apache.org/jira/browse/SOLR-8999
Project: Solr
Issue Type: Improvement
Reporter: Hoss Man
In Solr tests, we always start with a completely pristine tmp directories for
each test to use, and all of our existing MiniSolrCloudClusters expect that and
MiniSolrCloudCluster creates everything it needs.
But for Solr clients, that want to write tests using MiniSolrCloudCluster to
test their own code, MiniSolrCloudCluster can currently fail in confusing ways
if they re-use the "baseDir" in multiple tests runs.
At a minimum, if MiniSolrCloudCluster is going to expect baseDir to always be
empty on construction, then we should document this and assert it in the
constructor.
But it seems to me that it might also be useful if it were _possible_ (even if
not the default behavior) to spin up a MiniSolrCloudCluster pointing at an
existing baseDir that already had zk server data and existing solr instanceDirs
and verify that everything could be started up after a previous total shutdown.
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