Random shared by threads in RandomIndexWriter and MockAnalyzer
--------------------------------------------------------------
Key: LUCENE-3991
URL: https://issues.apache.org/jira/browse/LUCENE-3991
Project: Lucene - Java
Issue Type: Task
Reporter: Dawid Weiss
Priority: Minor
This is currently patched by creating a non-asserting Random like this:
{code}
public MockIndexWriter(Random r, Directory dir, IndexWriterConfig conf)
throws IOException {
super(dir, conf);
// TODO: this should be solved in a different way; Random should not be
shared (!).
this.r = new Random(r.nextLong());
}
{code}
and
{code}
public MockAnalyzer(Random random, CharacterRunAutomaton runAutomaton,
boolean lowerCase, CharacterRunAutomaton filter, boolean
enablePositionIncrements) {
super(new PerFieldReuseStrategy());
// TODO: this should be solved in a different way; Random should not be
shared (!).
this.random = new Random(random.nextLong());
{code}
If you replace new Random(...) with a simple assignment you'll get errors
indicating the Random instance is shared (or passed between threads). I don't
know how to fix it so I left it as it was before.
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