BaseLucene80DocValuesFormatTestCase.testNumericFieldJumpTables is way too slow

[msokolov]

Description

There is a comment in this test that says:

    assertDVAdvance(dir, rarely() ? 1 : 7); // 1 is heavy (~20 s), so we do it rarely. 7 is a lot faster (8 s)

When I ran it on my laptop it took 8m50s. (seed=B7E447320C76548A)

I know it's "only" a Nightly test, but this is kind of crazy - it makes it difficult to run the Nightly tests, which humans do need to do occasionally.

Gradle command to reproduce

./gradlew -p lucene/backwards-compat test -Dtests.nightly=true

Note that we run this test twice, too, once with "BestSpeed" and once with "BestCompression"

[dweiss]

I agree. These should not be so bad as to never make anyone want to run them. Feel free to tone it down.

[msokolov]

opened #15430 to address this