I posted a rather long diatribe outlining why I think speed-ups are a false goal for Lucene. Briefly, I'm convinced that as long as the tests are run when Hudson builds Lucene, 99% of the value of unit tests is realized. I suppose this implies that the hard-core committers agree that as long as failed tests are caught/corrected within a day things are fine.
Although coming from a background where unit tests are not always required, my viewpoint may be suspect <G>. er...@nottobeconfusedwithhatcher.com.... On Wed, Nov 25, 2009 at 8:43 PM, Michael McCandless (JIRA) <j...@apache.org>wrote: > > [ > https://issues.apache.org/jira/browse/LUCENE-1844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12782716#action_12782716] > > Michael McCandless commented on LUCENE-1844: > -------------------------------------------- > > Will we also speed up back-compat tests? > > > Speed up junit tests > > -------------------- > > > > Key: LUCENE-1844 > > URL: https://issues.apache.org/jira/browse/LUCENE-1844 > > Project: Lucene - Java > > Issue Type: Improvement > > Reporter: Mark Miller > > Attachments: FastCnstScoreQTest.patch, > hi_junit_test_runtimes.png, LUCENE-1844.patch > > > > > > As Lucene grows, so does the number of JUnit tests. This is obviously a > good thing, but it comes with longer and longer test times. Now that we also > run back compat tests in a standard test run, this problem is essentially > doubled. > > There are some ways this may get better, including running parallel > tests. You will need the hardware to fully take advantage, but it should be > a nice gain. There is already an issue for this, and Junit 4.6, 4.7 have the > beginnings of something we might be able to count on soon. 4.6 was buggy, > and 4.7 still doesn't come with nice ant integration. Parallel tests will > come though. > > Beyond parallel testing, I think we also need to concentrate on keeping > our tests lean. We don't want to sacrifice coverage or quality, but I'm sure > there is plenty of fat to skim. > > I've started making a list of some of the longer tests - I think with > some work we can make our tests much faster - and then with parallelization, > I think we could see some really great gains. > > -- > This message is automatically generated by JIRA. > - > You can reply to this email to add a comment to the issue online. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-dev-h...@lucene.apache.org > >
